Which is one way that chemical weathering influences mechanical weathering? a. ice wedging breaks apart rocks, thereby exposing them to acids in the rain. b. plants secrete acids that create holes in rocks, thereby allowing water to penetrate for ice wedging. c. water freezes in cracks of the rocks, thereby breaking them apart and the wind blows them away. d. winds scrape the rock layers away, exposing them to acids in the rain.

i forgot d:

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

What is the 77 element on the periodtic table

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?