A student writes two statements about the importance of soil. 1. Soil can act as a filter and keep pollutants out of groundwater.
2. Soil can be used as a natural building material.

Which of these describes whether the statements correctly describe the importance of soil?

A. Only statement one correctly describes an importance of soil.
B. Neither statement 1 nor 2 correctly describes the importance of soil.
C. Both statements 1 and 2 correctly describe the importance of soil.
D. Only statement 2 correctly describe an importance of soil.

Calvin ate a candy bar, which caused his body's blood glucose levels to become unbalanced. his body responded by initiating a feedback mechanism to return his body to homeostasis. place the steps of this feedback mechanism in order, starting with the blood glucose imbalance that occurred after calvin consumed the candy bar. a) calvin's blood glucose levels decreased. b) calvin's pancreas stopped secreting insulin. c) calvin's body cells started to take up glucose and store it as glycogen. d) calvin's blood glucose levels increased. e) calvin's pancreas started secreting insulin.

How are fossils used to date organisms?

Using the gas pedal analogy explain the impact on the cell cycle of one mutated tumor suppressor gene allele versus two mutated tumor suppressor alleles