All veins return blood to the heart. all veins return blood to the heart.

a. True

b. False

What field id and how to measure microscopes

The sodium-potassium pump regulates the amount of sodium and potassium inside of cells, particularly nerve and muscle cells.

Why do some people argue that scientists should not use embryonic stem cells in medical research? O A. They think research conducted on these stem cells is too difficult. O B.

Is blood type incomplete dominance

Equal masses of basalt, granite, iron and copper received the same amount of solar energy during the day. At night, which of these materials cooled down at the fastest rate? A) Basalt B) Granite C) Iron D) Copper

What makes a molecule a saturated fat?

Muscles or nerves or hormones control (s) the functioning of organs

How are Australia's fires relevant to today's vocabulary word "Succession"?

Water moves between the ocean, atmosphere, and land. In which form does water enter the atmosphere?

Suppose you use a microscope to look at a cell from the leaf of a tree. What structure will you see that would not be found in a cell from your fingernail? A. mitochondria B. cilia C. cell wall D. ribosomes