What describes the long history or Earth.
A. anthromophic era
B. cambrian period
C. geologic time scale
D. precambrian time scale

The use of dna as evidence in criminal investigations became possible because of the

What are two ways in which waves erode the land?

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.