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Biology 9 Online
OpenStudy (anonymous):

Please Help!

OpenStudy (anonymous):

which animals in the diagram would probably be present in the smallest numbers? Explain.

OpenStudy (anonymous):

OpenStudy (anonymous):

@InYourHead

OpenStudy (anonymous):

Find the animals that are not eaten by any other animals. ANIMALS. Not plants. Alright? The ANIMALS that are not eaten by ANY other animal. When you find them, let me know. And I'll tell you why they're present in the smallest numbers.

OpenStudy (anonymous):

oh so like the carnivores?

OpenStudy (anonymous):

Yeah, but not just ANY carnivores. We need to find the carnivores that don't have any predators. The carnivores that are not eaten by any other animal.

OpenStudy (anonymous):

so that would include the cougar and the cooper's hawk?

OpenStudy (anonymous):

@Directrix ?

OpenStudy (anonymous):

@tafkas77

OpenStudy (anonymous):

@InYourHead ?

OpenStudy (anonymous):

Yes, that's riight! Take a look at this pyramid: http://www.topmbbscoaching.com/images/004/13202308499829biomass-upright-pyramid.jpeg It's called a Trophic Pyramid. And don't pay attention to the animals on this pyramid. Just look at the very TOP section, of the pyramid. The very TOP section belongs to animals that are not eaten by any other animal, like the Cooper's Hawk, and the cougar, in our case. You see how the different levels of the pyramid are different sizes? Like how the BOTTOM is BIGGER and the TOP is SMALLER. That's because there's more ENERGY, for organisms that live on the BOTTOM of the pyramid. The ones that live on the bottom are plants. And since there's more energy at the bottom, there can be MORE organisms. At the TOP, there is LESS energy. And that is why the animals at the top of the pyramid are smallest in number. In other words, there are fewer of them.

OpenStudy (anonymous):

@InYourHead thank you :)

OpenStudy (anonymous):

You're welcome.

OpenStudy (anonymous):

can you help me with #8 also?

OpenStudy (anonymous):

@InYourHead

OpenStudy (anonymous):

@telijahmed

OpenStudy (anonymous):

you need to know what pines do ,let me check again long time i was thought this pines do conserve soil fertility,their cones fall off and affect PH i dont really know in which way so i would say that if the pines die the ecosystem would absolutely not be very suitaible for short trees and plants as seen in the diagram also the soil fertility should drop,less organic matter for the soil and as a result less productivity for the ecosystem to conclude it now if the primary producers cant grow then the herbivores cant feed as a result the canivores are doomed THEN YOU THE BIG GUY WHO CLAIMS TO BE SMARTER THAN THEM and overseer of the environment TOO WOULD STAFF. WHAT A TRAGEDY Ecosystem problems have a complex apprach someone could give you something different but i ll give you this also we forget that pines are sometimes used for our christmas and so no more christmas trees for you from your picture the pines are a little far from the rest of the system and so i dont know if this has any effect on my judgement however it is on a hill and so favours me more because the cones would fall and go down to the rest of the ecosystem

OpenStudy (anonymous):

@telijahmed Okay okay. Really. I have NO doubt that you understand what would happen, if the pine trees were to die. But seriously. Christmas trees? You're making a funny, right?

OpenStudy (anonymous):

@telijahmed And one more thing... "THEN YOU THE BIG GUY WHO CLAIMS TO BE SMARTER THAN THEM and overseer of the environment TOO WOULD STAFF. WHAT A TRAGEDY" ...What does that mean? What does that even mean..???

OpenStudy (anonymous):

in africa some pines are used for christmas

OpenStudy (anonymous):

funny

OpenStudy (anonymous):

Ohhh kay, so you're NOT making a funny. I believe you. Christmas in Africa. Great and everything. But it doesn't seem to have anything to do with this actual worksheet assignment.

OpenStudy (anonymous):

yeah i intend to send this picture to my environmental science proffessor to give it as a quiz in his class of natural resource management

OpenStudy (anonymous):

so @InYourHead can you explain to me

OpenStudy (anonymous):

Yes, I can.

OpenStudy (anonymous):

he did teach us right,not really i worked myself up to learn this stuff and THANK GOD it is paying off.

OpenStudy (anonymous):

but all that was just a joke they are not used for christmas

OpenStudy (anonymous):

Let's think about the kinds of things that the Ponderosa Pines can give, to other animals. I can see a few things here: 1. Tree bark 2. Berries 3. Pine cones Those three things are provided by the Ponderosa Pines. So, think about the animals that EAT those tree things. Take a look at the animals that need those three things, in order to live. What would happen to those animals, if the Ponderosa Pines died?

OpenStudy (anonymous):

the big guy thing was so gunny too

OpenStudy (anonymous):

Here's a big hint/question that will help you: Take a look at the DEER MOUSE. What does the deer mouse normally eat? AND...if the Ponderosa Pines died, what would be the ONLY THING that the Deer Mouse would have left, to eat?

OpenStudy (anonymous):

the deer mouse would only have insects to eat.

OpenStudy (anonymous):

Right! Now....if all the deer mouse ONLY ate insects, what would happen to the INSECT population? It would GO DOWN. Does that make sense?

OpenStudy (anonymous):

mice ** Sorry. Grammar mistake.

OpenStudy (anonymous):

yeah it makes sense since all they would eat is insects. but wouldn't they die eventually?

OpenStudy (anonymous):

The deer mice?

OpenStudy (anonymous):

how about the gray squirrel and the Bark Beetle, what would happen to them?

OpenStudy (anonymous):

I think you know what would happen to them.

OpenStudy (anonymous):

and no i am talking about the entire organisms that depend on the ponderosa tree.

OpenStudy (anonymous):

so they would die since that is all they maintain of.

OpenStudy (anonymous):

Yes. The ones that ONLY depend on the Ponderosa Pines would mostly die out. Like the bark beetle. The only thing that the Bark Beetle eats is BARK. And if the Ponderosa Pines died, there would be no more bark. So, most of all the Bark Beetles WOULD die, yes.

OpenStudy (anonymous):

yeah ok, and the other ones?

OpenStudy (anonymous):

The GRAY SQUIRREL....I think it could still get berries from the RASPBERRY BUSH. So, I don't think their population would COMPLETELY die out. But it would GO DOWN. Because raspberries would become their only choice of food. There aren't enough raspberries to support every squirrel.

OpenStudy (anonymous):

yeah there would not be enough of them to support all of them so ...

OpenStudy (anonymous):

So once again, we have three populations that are affect: 1. The INSECT population would GO DOWN. 2. The GRAY SQUIRREL population would GO DOWN. 3. The BARK BEETLE population would probably DIE OUT.

OpenStudy (anonymous):

and it says in the question if most of the ponderosa pines.

OpenStudy (anonymous):

Mmm hm. Most. If most of the Ponderosa Pines died, it would be enough to affect other populations, like the insects and the squirrels.

OpenStudy (anonymous):

So maybe bark beetles wouldn't ALL die out. But they would surely go down.

OpenStudy (anonymous):

oh ok thanx.

OpenStudy (anonymous):

The GRAY SQUIRREL....I think it could still get berries from the RASPBERRY BUSH. very funny

OpenStudy (anonymous):

Yeah it sounds funny if you try to say what I typed, out loud. I capitalize words as a way of highlighting them. I don't mean to yell them.

OpenStudy (anonymous):

i have a good sense of humour

OpenStudy (anonymous):

excellent answer thank you so much

OpenStudy (anonymous):

@InYourHead can you help me setup #7?

OpenStudy (anonymous):

I don't exactly have the time to spare, right now. I'm sorry. But I can tell you HOW to set up #7. First, you draw ONE circle for EVERY organism, on this worksheet. Write the name of the organism inside the circle. Then you draw an arrow FROM one organism, TO another one that EATS it. For example, look at my drawing. If a shark eats the dolphin, this is how we would draw it. |dw:1363551880819:dw| The shark eats the dolphin. So, the arrow goes FROM the dolphin, TO the shark. Because when the shark eats the dolphin, the energy from the dolphin goes TO the shark. Get it? And we have to do this circle & arrow thing, for every organism in that picture. Every plant and animal. You're gonna have lots of arrows. I'll tell you that much.

OpenStudy (anonymous):

but how do i put the ones that eat the plants but also the animals such as insects?

OpenStudy (anonymous):

@InYourHead and thank you :D

OpenStudy (anonymous):

i know how to like draw them and put them but how do i put the ones that eat multiple things from different organisms?

OpenStudy (anonymous):

@InYourHead if its okaii with you, you can help me on later. ?

OpenStudy (anonymous):

If an organism eats multiple things, we need to use multiple arrows. Here's an example: |dw:1363554791216:dw| In this drawing, I show that humans eat cows, AND carrots.

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