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Rainbow [258]
3 years ago
14

Describe the similarities and differences between the structure of the xylem and the phloem.

Biology
1 answer:
erastova [34]3 years ago
7 0
The Xylem transports minerals and water from the roots and the phloem transports food to other parts of the plant such as the leaves. They are both vascular tissues of the plant for the transportation of food.
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Along what types of tectonic plate boundaries <br> are volcanoes generally found? Why?
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Answer:

Divergent plate boundaries because the separating of the tectonic plates allows for the lava to push its way through the rift and escape to Earth's surface.

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In a food chain 200 kg of wheat is fed on by 18 kg of mice which in turn are eaten by 1kg of hawk. What is the percentage energy
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0.1% of energy

Explanation:

Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers absorb only 0.1 or 1%.

From the input of solar energy begins a unidirectional energy flow through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is dissipated in the environment.  

At each trophic level occurs an energy transfer to the next, with only 10% being usable in each of them. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time.

If wheat transferred 10% of the energy to mice, and of that 10% mice transferred 10% of the energy to hawk, then the percentage of energy transferred from the first trophic level to the third equals 0.1%.

10% (1st TL-2nd TL) / 10% (2nd TL - 3rd TL) = 0.1% (1stTL - 3rd TL)

<em>TL = Trophic level           </em>

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8 0
2 years ago
Well first one to answer winns
Veronika [31]
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Explanation:

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