New technology is important to the development of theories because it

allows for repeated experimentation.
enables the publication of new research.
replaces theories that are old and hard to test.
provides a new way to acquire new information.

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 units ate used to measure both velocity and speed? check all that apply

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring