The chemical composition of soil in a certain area was found to differ from that of the bedrock beneath it. Which statement would best explain the difference in chemical composition? A. Water washed iron oxide from the A horizon to the D horizon
B. The climate, especially rain and extreme temperatures, caused the soil to develop
C. The soil layers were mature because a large amount of time had passed
D. Water, wind and gravity transported weathered particles of rock to new locations

Question 7 of 10

q: compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city,

a:

comparing this to the inside of a food building/company.

all cells are surrounded by a plasma membrane, which protects the cell from its environment, keeping toxic substances out of the cell. it regulates which molecules are allowed to enter and exit the cell.

regulates all cell activity such as cellular metabolism, and growth in addition to storing and maintaining the cell's dna for transcription and replication. determines what proteins to make.

contains the organelles; site of most cell activity

the place where ribosomes do their working activity.

builds the proteins.

prepares proteins for use or export.

responsible for breaking down and absorbing materials taken in by the cell.

maintains cell shape.

transforms one form of energy into another.

the eggs of the insects should be the first thing collected at the scene.

false