Which of the following processes is not primarily caused by humans? A. air pollution
B. the greenhouse effect
C. thinning of the ozone layer
D. increased carbon dioxide levels
.

Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird