If an element begins with 100mg present, how much of the original element will be present at the 1st half-life? How much is the 2nd half life? Explain how this helps us determine the age of rocks and fossils.

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.

What best describes lactic acid fermentation?

Consider this plant cell which organelle is labeled g