Oxygen is most less abundant in water than air. air contains 21% oxygen but the oxygen content in water is only 0.001% what factors (physical and biological) can affect the levels of dissolved oxygen in the gulf waters? think of oxygen cycle

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d

Which step is the same in both forms of fermentation, as well as in cellular respiration?