The is thin and smooth and is the innermost layer of the heart.

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

What is the next step in the process after a substrate enters the active site of an enzyme