Environmental resistance decreases a population's ability to
survive. Which of the following
would be considered an abiotic
(nonliving) factor for
environmental resistance?

A) optimal temperatures
B) Ability to migrate
C)Inability to migrate
D)Suboptimal temperatures

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.

List charasteristics of athenosphere

What is the difference between a meteoroid and a meteor?