Where does subduction occur?
a. along the middle of some ocean floors
b. down the middle of mountain ranges
c. on continents
d. at deep-ocean treanches

The instructions for making proteins come originally from

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing

An organism's reproductive strategy includes all of the following except a. the number of offspring produced. b. the amount of energy expended in producing offspring. c. the length of time parental care is given d. the number of alleles an organism passes on.