The color of light that penetrates seawater to the greatest depth in coastal waters is:
a. blue.
b. red.
c. green.
d. orange.
e. yellow
C
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Members of the genus ______________ are associated with scarlet fever, rheumatic fever, pneumonia, etc.
Fill in the blank(s) with the appropriate word(s).
All animals are multi-cellular,
a. heterotrophic, and aerobic. b. heterotrophic, and lack motility. c. autotrophic, and have embryos. d. autotrophic, and motile. e. heterotrophic, sexual, and non-embryonic
If adaptation occurred, genotypes remaining at the end of the experiment should have had more rigid enzymes than their ancestors had.
a. true b. false
Which statement best describes a cell membrane?
a. it is found only found in animal cells b. it is a non living structure c. it controls reproduction in a cell d. it controls the passage of materials into the cell