DNA and RNA are two types of what?

Several scientist make the same observations about the effect of sunlight on algae. this set of observations forms a?

For most of human history, salt was a rare and valuable commodity that had to be either mined or extracted from the ocean through evaporation. This changed when modern chemistry allowed humans to produce it in factories.

The pulmonary plexus is a weblike network of nerve fibers that surrounds the primary bronchi and enters the lungs at the hilum. It consists of both sympathetic and parasympathetic fibers. A. True B. False

List each organ of the urinary system and concisely describe its function.

What is the source of flint's water pollution?

Why are chromosomes visible during mitosis but not at all other times?

Why the number of atoms of reactants must equal the number of atoms of products formed

A cell well divide and make two cells that are exactly the same. True or False

In some mice, fur color is inherited through incomplete dominance. The colors that are possible are black fur, white fur and grey fur. Grey is the trait that is inherited through incomplete dominance.

Describe how eukaryotic plant cells store and remove waste.