The figure shows an energy pyramid for an ecosystem. What happens to the amount of energy in the pyramid as it moves up through
the different levels? A) It increases by a factor of about 10%. B) It decreases by a factor of about 90%. C) It increases by a factor of about 90%. D) It decreases by a factor of about 10%.
The correct answer is - D) It decreases by a factor of about 10%.
In the energy pyramid for an ecosystem, the energy levels are consistent throughout the food chain, thus the pyramid shape of it. The organisms that are at the bottom of the pyramid are the ones that gain 100% energy, and those are the producers. As they are consumed, they give energy to another organism, bu that organism gets a bit less, by approximately 10%. The 10% decline in the energy transfer as we go up the hierarchy of the food chain continues, so the organisms that are at the top of the food chain actually gain much less energy than the ones on the bottom of the pyramid. That results in those organisms that are at the top of the pyramid to have to consume much larger amounts of food in order to survive, while the ones closer to the bottom need to consume much less.
<span>The answer is D. Ocean. Desalination is the process of removing salt and other substances from water. It makes the water safe for animals and plants for irrigation. It can be potable for humans if the desalination had removed the salt and ither substances.</span>
Xylem and phloem are the conducting tissues of the vascular strands. Their main role is in the transportation of food, minerals, and water. Xylem is the tissue which is responsible for the transport of water in plants while the phloem is responsible for the transfer of food and nutrients in the plant.