Answer:
it may be:
C and D and B the longer the empty space the longer the sound well go
Answer:
nervous system
Explanation:
the cns oversees every action our body does
The three most universal features defining modern molluscs are a mantle with a significant cavity used for breathing and excretion, the presence of a radula (except for bivalves), and the structure of the nervous system.
Answer:
The answer is C, 40,000.
Explanation:
You can obviously tell that 400 is too low... that's one meal for all of the turtles! They would need 40,000 minnows because it's a stable number. They can reproduce, and keep the population up. 4,000, though, is too low because they wouldn't have enough time to reproduce and continue to keep the population alive. Therefore, 40,000 should be a stable population.