How are the organs of the circulatory and respiratory systems protected?

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Linda and julia are trying to determine whether their ideas are scientific or pseudoscientific. linda's idea is free of bias. julia's idea gives the same result when tested repeatedly. which statement is correct about linda and julia's idea?

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?