Tuesday, April 28, 2009

Need help with science homework! lol, thanks?

Number 1: Explain why covering and refrigerating food helps to reduce spoilage from moulds.





2: One arm of a sea star with part of the central disk attached can grow into a complete sea star. Sea stars are considered a nuisance by people who raise oysters. A sea star can attach iself to an oyster's shell, open it, and eat the contents. In the past, oyster farmers tried to destroy the sea stars by cutting them into pieces and throwing them back into the ocean. What do you think was the outcome of this action?





# 3: a. What is meristem?


b. What is the role of these cells in asexual reproduction of plants?


2.a. Explain and give an example of how plants can reproducefrom roots, stems, and leaves.


b. Why are the plants produced by these methods considered to be identical to the parent plant?





Thats it, lol. Thanks! :) if u take the time to help me, its hugely appreciated.

Need help with science homework! lol, thanks?
1. Ask yourself what are molds and what causes molds, and you'll have your answer.





2. The first sentence pretty much says it all, don't you think?





3. I don't know this one, you'll have to consult your textbook or try to do your homework yourself.
Reply:1) It really doesn't. Mold spores are deposited on the food before the wrap was placed and mold likes cold. It even rhymes.


2) Sea stars continue to eat oysters.


3) This is a trick question. Plants do not have meristems.








Now go get that a+
Reply:1. Covering food reduces the number of mold spores that the food is exposed to, while refrigerating food slows the growth of mold.





2. You're allowed a little room for thought here, but it seems that all the farmers did was create more sea stars.





3. Check the wikipedia article for sources on these answers.


a. A meristem is where the plant grows. These are usually found in roots and shoots.


b. Because plants can grow from these cells, these cells are used to start asexual plant reproduction.


2. look this one up yourself.


b. All the genetic material used to create the new plants was taken from one plant, and this material was not combined in any way with other genes. Thus, all the new plants have the same genetic material as the plant they were created from.
Reply:1. Mold is air born so if you cover the food it is less likely to contaminate.


2. If a sea star can grow out of one arm and the arms are thrown in the water, I can only conclude that mass reproduction occurred.


3.a. not sure about meristem. I can only assume that it has something to do with being able to reproduce asexually.


2a. If you cut a part of a pothos household plant and put it in water, it will grow roots and more leaves. b. Considered identical because it is the same plant.


Do you think a small inland sea could help places like australia or africa?

I have thought about the benefits of an inland sea area that could be artificially constructed in desert areas.


A sea that had no sharks or very large predators could be a thriving dinnerplate to the surrounding locals and a breeding ground for caviarre and pearls.


It would have the advantage of whatever trees you can get to grow in its locality. By continually having a flow in and out- there could be electricity produced and as it would be free- hence the overheads on any de-salination plant - would be greatly reduced.


Australia has a problem with its native peoples that could be controlled or maybe even eliminated by offering the work to these people and as much guidance as necessary.


If they were offered the first residency and control of fishing and oyster farms etc - it could be a step in helping these people move toward the future instead of early graves-I believe they have a life expectancy of around 60yrs and less due to oppression and depression.


Can anyone help?

Do you think a small inland sea could help places like australia or africa?
Check out the Salton Sea in California.


The Salton Sea as it exists today is the aftermath of a man-made environmental disaster that occurred between 1905 and 1907, when improper management of irrigation routes from the Colorado River caused the river to flow unchecked into the Salton Sink for some two years.





But forget that the salton sea is a great place and there's talk about bringing in ocean water and making it navigable by oceangoing ships. This would inprove the economy of the area. It is one of the premire bird habitats in the world. If the same conditions were available in Africa or Austrailia I'm sure a similar project could be undertaken. The salton sea did not cost anything but allowing the water to flood the area for two years.





I also bring your attention to the fact that salt is a necessary staple in the sahara and may provide part of a sustainable economy.


If you read about Ghandi and the British salt tax in india you would understand how important salt is to a person living on $.50 per day in Chad.
Reply:Time will tell.


Africa is split along one side by the East African Rift. It happened with Madagascar 50 million years ago when it slowly split off the continent, and the eastern part of Africa is currently slowly splitting away from the remainder of the continent. Currently, water is percolating into that region through fissures. Madagascar has a wetter climate, maybe that eastern portion will also get a wetter climate.


One practical problem that is faced, though, is movement of water through that region is limited. The evaporation of water is fast, but water can't escape any other way, so the water gets so salty it precipitates different salts, such as sodium carbonate. Those deposits are a source of income for local peoples as they collect them and sell them to processing plants that purify them and sell them as industrial supply chemicals.


By doing a rather limited amount of canal-digging, those low-lying regions made by the East African Rift could be flooded pretty quickly. Your question is really pretty realistic for Africa. But......I'm afraid that we'd pretty much end up with a landlocked lake where water flows in, evaporates, and doesn't have sufficient outflow. We'd end up with a really huge soda lake, not a developing ecosystem.


Nice question, and doable, actually, but I'm afraid you'd be very disappointed with the results until a few million years could go by to open up that rift far enough that water can actually flow through enough to keep the salinity similar to the ambient ocean salinity of 4%.
Reply:This is the perfect example of a pipe dream. The costs involved of building any such project would far outweigh any benefits. How would the water flow in and out? How would you keep the water in the "sea" and stop it eroding the land? How do you know any marine life would flourish in artificial surroundings? How would you deal with contamination? - Yes -it's a crazy idea. Wonder how long before a government invests in it!!!
Reply:Did you say "...offering the work to these people..."?





Suggest you come and visit,nay live here, and see if you can say that hand on heart :-)
Reply:Collecting the points while offering kudos for some of the thoughtful analysis above. Undoubtedly a pipe dream, but a noble one and it triggered an interesting discussion of the benefits of an inland sea.
Reply:It would need to be a large sea or several smaller 'lakes'.


I doubt you could keep predators out as 'crocks' and the like are mobile and nature has a way of introducing predators despite our pathetic interventions.





You would also face difficulties from both the native people who would once again see the way of life being subsumed for the 'greater good' as viewed by someone else's perspective despite their own Milena of history, plus the conservationists would point out you are destroying the natural habitat of a wide range of dessert species of animals and plants.





The best thing we can do in some cases is to recognise if we stop interfering in the balance of their 'world' they can get along fine without us
Reply:No doubt an inland sea in places like Australia would be beneficial, just as the Sea of Galilee has been for thousands of years. However the problem is,where are you going to get the water from in the middle of a desert?


ALL VEGETARIANS - do you eat clams or oysters?

How do i explain to my friends why i don't eat clams or oysters. Do they have a brain? Can they think? because if i say i don't eat them because they were once living, then ppl start asking me why i eat plants.

ALL VEGETARIANS - do you eat clams or oysters?
i eat them once or twice a year but i mostly eat crabs.
Reply:You don't eat clams because you're a vegetarian. Tell people it is your choice and that's all that matters.
Reply:Plants don't have the sensation of touch or pain, therefor most vegetarians, like myself , usually don't eat seafood. Plants are autotrophs, totally different structure from animals. By being a vegetarian, you vow not to eat living beings. Living being is pretty vague, but from my understanding it pertains to animals, so in my opinion I think it's bets not to eat oysters and clams they too have feelings and touch.
Reply:Im not a vegetarian cause I like animals.......................





Im a vegetarian cause I hate plants!!!!!!!
Reply:Hiya, they have a face a brain and a nervous system.Plants do not!! it sounds like your friends are trying to 'stir' the shitake!!!!!!!
Reply:I don't eat them and I'm a vegetarian. ♥
Reply:1. a person who does not eat or does not believe in eating meat, fish, fowl, or, in some cases, any food derived from animals, as eggs or cheese, but subsists on vegetables, fruits, nuts, grain, etc





Easy peasy! Quote the dictionary!
Reply:No I dont eat clams or oysters or any seafood because its alive. Its no use getting into the "fish have feelings too" debate. There's other roads to go down, such as the overfarming of the ocean and the mercury content of seafood.
Reply:OK you eat plant because are naturally food for you and no i don't eat oyster or clam because you are not to eat it if you want but remember that they were living once, and plants can not have eggs are babes right, but clam and oyster can and so do we so tell your Friends that k
Reply:Do you like clams or oysters? have you ever eaten some? If you don't like them, just say "I don't like them". If you say you don't eat them because the were once living, well, then you should stop breathing, because every time you breathe your inmune system kills thousands of organisms... Or never bath again, you are killing germs!!... Don't eat anything... anything at all... Mr. Spock said it once: "In a strict scientific sense, Doctor, we all feed on death - even Vegetarians".
Reply:Vegetarians do not eat clams or oysters. If they don't know the difference between a mollusk and a plant, then you need smarter friends ... better yet, just tell them you're allergic!
Reply:save a cow, eat a vegetarian
Reply:I eat neither one of them. People always ask me why i don't eat clams or oysters and i just simple say because they are animals. Even though i eat plants, they are not animals so that is different.. i hope I could help you.
Reply:They are animals. Not plants. Just leave it at that.
Reply:No, I don't eat any dead members of the animal kingdom, brain or not. If I did, I wouldn't be vegetarian, by definition.
Reply:i dont eat eaither i just dont like them.If your a vegitarian it doesnt matter if you eat it.People are probably just weridos asking you why you eat plants you eat veggies because you think they taste good and that theres nothing wrong with them.You just would like salads and fruits better then a Hamburger or a grilled chicken sandwhich.Who cares if you eat pants i dont let it bother me.People say how can you be a vegetarain and i just say because i dont like to animals and i prefere fruits and vegetables better then hot dogs and hamburgers .So go ahead be vegetarian AND BE PROUD! cause there aint nothing wrong!!!
Reply:I think oysters do have brains.





They think "damn this grain of sand is scratchy. I better smooth it over into a pearl".
Reply:NO vegetarian eats seafood. Clams and oysters`are animals, not plants.
Reply:I say if it toke in one breath of oxygen to live. plants don't so your good.
Reply:People get freaky with me about the whole "well plants are living things too". Some people consider themselves veggie but eat types of seafood, I don't, others don't. It's a matter of personal choice really.





I usually go beyond the whole animal cruelty thing when I have to get down to defending myself. Brain or no brain, the ammount of fishing that goes on(for clams, oysters or other types of seafood) screws with our eco-system. You can do some reasearch on this is you feel the need to learn more. When we removes entities that are natually occuring in a specific place(clams in the ocean), we screw up a balance. Over farming crops isn't neccessarily the best. Everything comes in moderation. I don't really know whether the little guys have brains or feelings either, but I don't want to support an industry that blows our planet out of whack.
Reply:Tell them you don't eat them because they taste like fishy rubber bands(clams) or look too much like snot(oysters). Maybe you don't eat them because the can carry hepatitis? It's harder to argue with you if you just pass it off as "I don't like the taste."


Can ethical vegetarians eat certain sea-life?

Some sea-life don't have nervous systems advanced enough to feel pain and also don't have brains and thus have no consciousness (much like the way most plant-life works), but they're still living creatures, even if they don't realise it, so can someone who is vegetarian purely because of the ethics of eating animals eat certain sea-life like clams, oysters, etc.?

Can ethical vegetarians eat certain sea-life?
If you eat fish that makes you a semi-vegetarian. Clams and oysters still feel pain. I remember when I went to the U.S virgin islands I collected a bunch of tiny thumbnail sized mussels and kept them in a cup of salt water. I left the cup in the sun while I went out to swim and soon when I came back the water was super hot so I dumped them back into the ocean and you should have seen how fast they dug into the wet ,cool ,and salty sand. They were obviously glad to be relieved from the heat. I seriously had never seen mussels dig that fast until that particular incident. To me it would be even scarier to die in a pot of boiling water if I had no eyes. Like clams.
Reply:puppy just doesn't get it. ignorance is bliss isn't it sweety pie. i think you should learn what it is to be a vegetarian. cluelessness is dangerous. then again you're not the template of intellectuality. Report It

Reply:Pure Vegetarians do not eat anything that would fall under the biological classification of "Kingdom Animalia". These sea creatures do, so pure vegetarians do not consume them.





Pesco-Vegetarians eat seafood but no other meats.





Pollo-Vegetarians eat chicken but no other meats.





Lacto-Vegetarians eat dairy, but do not consume any meats.





Ovo-Vegetarians eat eggs.





Vegan or Pure Vegetarian eats nothing from the above mentioned biological kingdom.
Reply:Personally, I wouldn't have a problem with it from an ethical standpoint. I still wouldn't eat shellfish though, because of the mercury.
Reply:Vegetarians do not eat animals, period.





This is the definition from the people who coined the word. Their word, their definition. http://www.vegsoc.org/info/definitions.h...
Reply:No, they would no longer be a vegetarian if they ate an animal.
Reply:my sister is so dumb you would swear she has no nervous system or ability to feel pain.





And she hasn't had a conscious thought about anything useful since 1973 .





Doesn't mean we should eat her though, does it ?





There is a clue in your question, its sea-LIFE





"Iam O" really needs to stay in the "hair" section, anything else is asking for ridicule.
Reply:If you would swat a fly, I'd say go ahead and eat clams and oysters. They don't have a face, but the fly does. I don't eat seafood because we use the sea for our toilet and I don't eat out of my toilet. :o)
Reply:I have asked myself this question many times, and currently are saying yes. I personally don't eat fish. I do think it is okay to eat things such as muscles, and other crustaceans\shellfish. It is hard to decide though. I still feel guilty sometimes when I DO decide to go all out and eat some shrimp or something.





--------------------------------------...





-Wes





There are no hunting accidents. It's called karma.
Reply:No. Vegetarians don't eat any animals.
Reply:Other animals are often harmed during the harvesting or collection of sea life. These other non-target organisms are called by catch and are often thrown dead or dying back into the ocean. Often the ratio of by catch is much higher, than the animal being harvested. There are also environmental concerns about the sustainability of large scale seafood production. In addition our oceans were used as waste dumps for many years. So sea food has one of the highest concentrations of heavy metals. This is due to the bio-accumulative nature of these toxins. Just because these sea creatures aren't cute and cuddly it doesn't mean they deserve to die.
Reply:I believe that it would be hypocritical to eat anything that falls inti the animal kingdom. Also, the harvesting of these animals has a hugely negative impact on the environment which should also be something you consider when you are thinking about what you eat. However, food is a deeply personal choice, and if you feel it is right don't let others impact how you eat.
Reply:An ethical vegetarian is called a vegan. Vegetarians eat dairy and eggs, which still results in suffering, death, and exploitation. Vegans, on the other hand, do not eat any animal products.





Your question is absurd. Just because they aren't "aware" of the torment, it does not make it right or okay. You sound like a would-be serial killer.

augmon

When clams and oysters open why do they have air bubbles, but they don't go to the surface?

My 5 years old Daughter, Maliha (Ma-lee-a), wants to know why it is that oysters let out air bubbles when they open their shell, but they never got to the surface for air? (I thought maybe because of air in the soil or plants, but I'm not even sure. I know they filter feed). Help this poor mom with an answer, and I'll tell her everyone in the world told me to tell you.

When clams and oysters open why do they have air bubbles, but they don't go to the surface?
they filter oxygen out of the water
Reply:Would it be like fish with their gills? As they swim they filter the oxygen??


I hope I helped a little :)
Reply:I always thought it was because they burped...
Reply:They breathe oxygen dissolved in the water they live in, and exhale it in the form of bubbles.


What sould i feed my rooster?

i have layer hens and a rooster. they all get "layer feed" and bugs and plants they find on their own.





should my rooster be getting something more than bugs and "girl" food?





i also give them bread and leftovers once in a while.





is layer feed just normal chicken feed except that it has added oyster shell to make the egg shells harder?

What sould i feed my rooster?
I don't know i feed my chickens layena feed and cracked corn and the dig around...





EDIT: DO NOT FEED IT SCRAMBELED EGGS! THEY WILL GO MAD!
Reply:Feed recommendations for laying hens is 16% protein (since their is alot of protein in egg white and egg yolk) plus calcium for the shell which they can get from the oyster shell or limestone and from the foods they eat..


These nutrients are even more important if you want fertile hatching eggs.





Mature standard breed roosters only require about 9% protein. And there is enough calcium in the corn, bread, bugs and grass they eat.





There is a slight myth out there if roosters eat layer food they will get too much calcium and suffer from kidney damage or stones. A rooster can excrete extra calcium.


If the Ca source is oyster shell, the M %26amp;F birds will just pick out and eat as much as their body needs.
Reply:You are doing just fine! Do not worry especialy with free ranged chickens
Reply:scrambled eggs
Reply:rice,wheat
Reply:You should have cracked corn for all your chickens and the layers feed for you hens. Your roosters don't lay eggs lol and it is awful expensive to feed roosters feed they don't need. Being winter they need the cracked corn. Unless you live somewhere they can still get at bugs and grass and it isn't winter. Bread and leftovers is fine, they will pick out what they like. If you feed crack corn you will have better tasting eggs too from your hens.





Layer feed does not have oyster shells in it. That is sold separately at least it is here and we are really country lol. But yes the oyster shells make the shell harder. The layers feed has vitamins and stuff kind of like when a woman takes pre-natal vitamins. It just makes her healthier to produce more eggs.


Are mollusks, scallops, oysters, clams, etc. animals, plants or what? Do they have brains? Can they love?

Mollusks are invertebrates--yes animals. But, they're nervous system isn't as developed as ours are, so they don't feel the same way we do. There brain really isn't a brain, as much as a region of receptors. They probably don't feel "pain" so to speak, but they know that pain is a negative stimulus to avoid, if that makes sense. Evolutionarily, they would be conditioned to avoid "painful" situations that might harm them, but the pain wouldn't feel like it does to you and me. Incidentally, octopus and squid are also mollusks, but their nervous systems are a little more advanced than clams, scallops, and oysters. I'm sure none of them feel love. Basically, they just feel the need to survive and reproduce.

Are mollusks, scallops, oysters, clams, etc. animals, plants or what? Do they have brains? Can they love?
They're invertebrates in the animal kingdom. They have rudimentary brains but 'love' is not in their life. They have a urge to reproduce by scattering eggs and fertilizing them, but that's not my definition of love.
Reply:they are all animals, they all have working organs and yes brains, and weather or not they can love is actually an opinion. i believe so.
Reply:they're bivalves and they're really just a very small muscle so they don't think or anything
Reply:They are animals, but NO to all of your other questions. But they are considered "seafood" and if you are a pesco vegetarian or flexitarian vegetarian like many cultures, Japan for instance, you eat them.





I am a flexitarian vegetarian and I eat a lot of seafood and fish along with a lot of plant matter. So eat away.
Reply:They don't have a brain, can't love and taste great.
Reply:Mollusks are animals.





We can't read other people's minds; so how can we read the minds of mollusks?
Reply:They are animals, some have ganglia (primitive brain or a primitive nervous system). However, not all mollusks are created equal. The octopus for example is a neurologically-advanced invertebrate, they are very smart and the female raises her young then dies. There is also gastropods, etc... The best thing is to educate yourself.


Since I am not sure if they feel pain, I do not eat them! I am sure tofu doesn't suffer!


Check: www.pbs.org/kcet/shapeoflife/animals/mol... and http://www.biosci.ohio-state.edu/~mollus...


Good luck and happy eating.
Reply:they dont have a brain but have vegetative nervous system, biologically they are in the lowest place in hierarchy of the animals