Question

which best describes the pattern shown in this model?
a) energy is generated at each level.
b) an equal amount of energy is available at each level.
c) most of the energy at a trophic level passes to the next level.
d) a small amount of the energy at trophic level is passed to the next level.

1. often when a group of scientists present their results from an experiment, other researchers will conduct the experiment to verify the original study’s results. which best describes what the researchers are doing?

a) the researchers are being cost effective.
b) the researchers are conducting multiple trials to check for accuracy.
c) the researchers are performing a cost - benefit analysis.
d) the researchers are trying to replicate results.

Explanation:

First Question (Trophic Level Energy Model)

The model is a trophic pyramid. In energy flow, only ~10% of energy at a trophic level passes to the next (most is lost as heat, used for metabolism). Option A is wrong (energy isn’t generated at each level, producers generate it). Option B is wrong (energy decreases at each level). Option C is wrong (most energy does not pass to the next level). Option D matches the 10% rule (small amount passes to next level).

Replicating an experiment means other researchers repeat it to verify results. Option A is wrong (cost - effectiveness isn’t the goal here). Option B: “multiple trials” usually refers to the same team repeating, here it’s other researchers (replication, not just multiple trials by the same group). Option C is wrong (cost - benefit analysis is about weighing costs/benefits, not verifying results). Option D: Replicating results is when others repeat the experiment to check if they get the same outcome, which matches the scenario.

Answer:

D. A small amount of the energy at a trophic level is passed to the next level.

Second Question (Scientific Replication)