Please help! A lot of points

1. Some amphibians and crayfish can withstand periods of dryness by burying themselves in mud. In which pond would they survive best?

Pond A, b, c or d?

2. Some mussels require a sandy bottom in order to maintain an upright position. In which pone will they die out?

-Pond a, b, c or d?

3. Which pond would most the most likely to lead terrestrial succession?

-Pond a, b, c, or d?