What is thought to be most responsible for the salinity of the oceans? Chlorine gas combined with sodium from Earth's rocks.
Natural run-off from mountain ranges.
Earthquakes stirring up the ocean floor.
Volcanoes releasing gas

Astructure that is found in a plant cell and not in an animal cell is a ? central vacuole mitochondrion nucleus ribosome

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 is the primary function of the nervous system?