What is the biggest single factor in environmental science today? a pollution b rapid human population growth c urbanization d global warming

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

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.

Which of the following forest management practices is best for reestablishing areas of forest?