! Need help now please!

How is the weathering of rocks by water different from the weathering of rocks by ice?

A: Water blows sand on the rocks to break them down, while ice contracts inside the cracks of rocks

B: Water changes the shape of rocks by crashing against them, while ice cracks the rocks by expanding.

C: Water cracks the rock by expanding, While ice makes the surface of rocks smoother

D: Water makes the crack in rocks bigger, while ice causes the cracks to close slowly over time.

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.

The wind speed in the region between cities a and b was probably the greatest at noon on which day?