During meiosis, homologous chromosomes frequently exchange portions of their dna. this process increases the number of different genotypes that an offspring can inherit. what is the name of this process?
a.
mutation
b.
transduction
c.
crossing-over
d.
genetic transfer

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water