The pigment responsible for skin color?

Explain this statement, cells are the basic units of structures and function in organisms

Normally, what is the relationship of the amount of sodium excreted to the amount ingested that day? a. at extremes of intake, they are unrelated; at normal intake, intake is greater than excretion. b. intake is higher. c. excretion is higher. d.

What does the pentagon represent

Which would be the correct description for the word autotroph? 1-Organisms that produce their own organic molecules for energy in nutrition using energy from light or from inorganic chemicals sources 2-The total of all chemical reactions within a

What type of hallucination is most common? a. olfactory b. tactile c. visual d. gustatory e. auditory?

How does the structure of DNA determine the structure of proteins?

Which sentence correctly compares two solutions that differ by one unit of pH? O A. The acidity of the two solutions cannot be compared using the pH scale. O B. The acidity of the two solutions is the same. C.

Summarize what goes into each photosystem and what comes out of each photosystem; where do these products go?

What process is responsible for most of the heating of the lower atmosphere?

What theory proposes that evolution occurs steadily (slowly) in tiny changes over long periods of time? A. Gradualism B. Relative dating C. Natural selection D. Punctuated Equilibrium