Each day, changes take place in the atmosphere. The average of these changes over a long period of time is called .
A. weather
B. climate
C. wind
D. rain

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.

Why is it important to study each branch of earth science?

Blank is a rock with a find dark texture that makes up the oceanic crust