The major effect of excess water in the soil is
A. increase the level of oxygen.
B. lower the amount of oxygen.
C. reduce the pH.
D. increase the amount of nitrogen.
B. lower the amount of oxygen.
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When a human embryo is implanted in the uterus, the embryo is in the morula stage. Indicate whether the statement is true or false
The sympathetic nervous system:a
is involved in restoring energy to the body. b. directs quiet, calm activities. c. is the only system that innervates the heart. d. is activated when there is a startling situation. e. is part of the somatic division.
A potassium ion gradient is set up in insect Malpighian tubules through an active transport process. As a result, potassium concentration is higher in the lumen of the tubules than in hemolymph
How would the potassium gradient affect water movement? A) Water would be forced out of the lumen of the Malpighian tubules through an osmotic gradient. B) The potassium gradient would have no effect on water movement. C) There would be a net movement of water into the lumen of the tubules. D) Water would be conserved, forming a hypertonic solution in the Malpighian tubules.
Sebum contains ________ which contributes to creating an inhospitable environment on the surface of the body
A) lysozyme B) collagens C) acids D) salts E) bile