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%

B) It decreases by a factor of about 90%.

Explanation:

When we move in the upward direction in the energy pyramid of an ecosystem, the amount of energy is decreases. If a producer contains 100 % energy, so only 10 percent energy is transferred to the body of primary consumer and the rest 90 percent is lost as heat energy. And again when primary consumer is eaten by secondary consumer, only 10 percent of energy is transferred and the remaining energy is lost as heat energy and so on.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands