How do multi-cellular organisms develop?
a.
cell differentiation - start from a single cell and as the cells divide they become specialized
b.
they all start as skin cells
c.
organisms have the same number of cells all the time.

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.

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

Discuss the functions of epithelial connective nerviud and muscular tissues