Answer: tissues, organs, organ system
Explanation:
goes from top to bottom
Answer:
d. blood moves from the heart into arteries and into smaller vessels and then back into larger vessels as it makes its way back to the heart.
Explanation:
A closed circulatory system is a system in which blood is separated from the interstitial fluid as it circulates in the blood vessels. In a closed circulatory system blood circulates in one direction that is from the heart and then then returns to the heart again after circulating around one of two routes of circulation. A closed circulatory system can be observed in vertebrates, annelids, mollusks.
A double-stranded DNA molecule is copied to produce two identical DNA molecules.
I would need more info to clarify, but I would believe this is an conclusion considering it's apart of the science project, which I assume is done.
Answer:
Relative dating
Explanation:
Relative dating can determine the relative age of something.
