Oxygen was introduced into the atmosphere as a byproduct of a. respiration. c. dehydration. b. photosynthesis. d. osmosis.

Which statement is true? Sediment can be any size. Sediment is only small particles of sand that settle out of the water. Sediment doesn't move from the place where it was formed. Sediment in the wind is too small to cause damage.

How does food provide a source of energy for living things

Which is not a characteristic common to all minerals

Why does Ocean City MD. have warmer winters than Sterling VA?

Is it surprising that these genes would be of such similar lengths despite being from different species? Explain.

Living animal cells, each with a salt concentration of 1%, are placed in a solution of 30% salt. Which of the following will occur? A.

The duck-billed platypus has 52 chromosomes in its body cells. When the platypus's body cells divide by mitosis, how many chromosomes will each daughter cell have?

What is a prokaryotes in biolog

Which of the following does not represent conditions believed by scientists to have been present on early Earth? A. An atmosphere thick with water vapor B. energy in the form of ultraviolet radiation C. extremely cold temperatures D.

What would happen if a cell stopped functioning correctly?