How does the circulatory system work at the organ level? Nutrients are delivered throughout the body.

Cardiac muscle contracts.

The heart pumps the blood.

Blood cells carry nutrients.

Dna is the genetic material that makes up living things, and folic acid plays an important role in the information of dna. jon wants to study the effect of folic acid on dna formation in microbes. which statement accurately describes the variables in this study

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

During convection, less dense fluid rises and denser fluid sinks.