The most common limit to plant growth is a lack of ____

a. phosphorous
b. carbon
c. hydrogen
d. oxygen
e. nitrogen


ANSWER: e

Biology & Microbiology

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The first part of the large intestine is the cup-shaped ________

a. cecum b. appendix c. transverse colon d. ascending colon

Biology & Microbiology

On day 21 of the menstrual cycle, most progesterone is secreted by the _______ in the ovary.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Every organism's scientific name consists of:

a. 2 names b. 3 names c. 7 names

Biology & Microbiology

When you exhale what stage(s) of aerobic cellular respiration is producing the carbon dioxide you are breathing out?

Biology & Microbiology