[单选题]
Which of the following diag
h2ag5hl (va1to5.pgx j- 3o nprams shows the flow of ene
otgn7/f-2vx)l;zqxofve8)r 5c v1wy rgy in an ecosystem having four tro
zo 2xxv e fwfv5q;v yoc7/tn)gl1)-r8phic levels? The size of each level represents energy values (in $kJm^{−2}yr^{−1}$) in the energy pyramids below.
A.
B.
C.
D.
参考答案:
C
本题详细解析:
Explanation:
Most of the energy present in each trophic level does not pass to the next level in large part because of respiration. Producers usually have the largest amount of biomass and greatest amount of energy and form the base of the stepped pyramid. Typically only 10% of the energy is moved from one trophic level to the next which is why the upper levels are generally smaller than lower levels.
