It’s the second one. The energy retained should decrease from the bottom of the pyramid to the top.
( if that’s not right then it’s prob the first and second answer.)
Answer:
The particles move in thy same direction as the vibrating source of the sound wave.
Explanation:
The answer is 4. Variations that help with survival will be passed on to future generations and will rapidly change the whole population.
dish soap because a variable (often denoted by x ) whose variation does not depend on that of another.
