The herbicides (weed killers) 2,4-D and 2,4,5-T are examples of synthetic:a
abscisic acid.
b. auxins.
c. cytokinins.
d. ethylene.
e. gibberellins.
b
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Which of the following statements concerning archaea in the microbiome is correct?
A. The human body is a hostile environment for archaea. B. Archaea evolved under extreme conditions and are not commensal with humans. C. Archaeal infections are treated with translation inhibitors, as their ribosomes are the same as bacterial ribosomes. D. Methanogens are associated with anaerobic regions of the gut and the gingival pockets.
In itself, a flood that washes away an entire population of rabbits is
a. a density-dependent factor. b. a limiting factor dependent on the individuals. c. a consequence of exponential growth. d. density-independent. e. a result of natural selection.
Which of the following is a nucleotide?
A) adenine + deoxyribose B) sugar + nitrogenous base C) adenine + ribose + phosphate D) phosphate + ribose
When injured or irritated, our mast cells release
What will be an ideal response?