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ycow [4]
3 years ago
5

What trophic levels do humans occupy on an ecologcal pyramid?

Biology
1 answer:
zhannawk [14.2K]3 years ago
4 0
I believe the answer would be "Top Predators"
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Which of the following channels would not be expected to generate a change in voltage by movement of its substrate across the me
Tcecarenko [31]

Answer:

(a) an aquaporin  

Explanation:

An aquaporin is a water channel which forms a pore in  the cell membrane and facilitates the movement of water. Aquaporin is an integral membrane protein (permanently attached to the membrane) that enables the in and out flow of the water. This channel also prevents the passage of ions and other solutes, so it cannot change the voltage. There are four types of aquaporins, and they are mostly found in the kidney with the function of water reabsorption.

6 0
3 years ago
Which statement is true about the layers of the Earth? * 1 as temperature and pressure increases, density increases 2 As tempera
nignag [31]

Answer:

1. As temperature and pressure increases, density increases

Explanation:

The earth is composed of three main layers: Crust, Mantle and Core. The density or mass per unit volume of the earth's layers increases as one moves from the surface towards the interior of the earth known as the core. Also, there is an increase in pressure and temperature as depth increases. There are three main sources of heat in the earth's core: (1) conserved heat from when the planet formed and coalesced, (2) heat due to friction caused by denser core material sinking to the center of the planet, and (3) heat from the decay of radioactive elements.

The earth's core is composed almost entirely of the metals, iron and nickel. The core has an inner solid layer and a molten outer core. Iron and nickel are both very dense metals, so the core of the earth is very dense and the density increases with depth with the inner core being the most dense layer of the earth.

7 0
3 years ago
Nearly all plants can be reproduced asexually.
Minchanka [31]
The first question is B. false, The answer to the second question is stolon.
5 0
3 years ago
How might the poison dart frog population suddenly increase? How might this affect the ecosystem?
umka2103 [35]
If the predator that feeds off the dart frogs goes extinct or migrates to a different area then the dart fronts will have a much larger population. This means that the resources the dart frogs rely on will start to deminish and their prey will have smaller numbers
8 0
2 years ago
Read 2 more answers
Blank is the pentose sugar on RNA. please help me!!!!
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The pentose sugar on RNA is called ribose. (a trick to remember it is that the "R" in RNA stands for ribo)

Hope this helps :)
4 0
3 years ago
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