3 questions. Try each one, then open the answer to check yourself and read the explanation.
Use the diagram (a pyramid of Algae, Tadpole, Tilapia and Shark) to answer: Which level of the pyramid has the least total stored energy?
Answer: D (H.)
Energy is lost at every feeding level, so the top level (H, the shark) holds the least total energy.
Leaching is
Answer: A (washing away of humus from the soil surface)
Leaching is when water draining through the soil washes away soluble nutrients; of the options, washing away of humus is the closest description.
Which of the following lacks chaerae tentacles and antennae?
Answer: D (Earthworm.)
Snails have tentacles, and crabs and millipedes have antennae, but the earthworm has neither.