8. the phosphorus cycle involves mainly the
a. atmosphere and biosphere.
b. lithosphere and hydrosphere.
c. geosphere and biosphere.
d. asthenosphere and hydrosphere.

Select all the true statements about the cosmic microwave background radiation

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

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?