When did the Earth and other planets of our solar system form?
a. 1.2 billion years ago
b. 4.6 billion years ago
c. 7.2 billion years ago
d. 5 billion years ago
e. 13 billion years ago
b
Biology & Microbiology
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Which of the following is NOT known to be influenced by plant hormones?
a. patterns of plant growth b. plant cell metabolism c. plant gene expression d. plant growth responses to light e. plant extinction rates
Biology & Microbiology
The portion of the peripheral nervous system that regulates the internal environment is the:a
telencephalic nervous system. b. autonomic nervous system. c. thalamic nervous system. d. somatic nervous system. e. hypothalamic nervous system
Biology & Microbiology
Spherical bacteria are known as:
a. gram-negative. b. spirilli. c. viruses. d. cocci.
Biology & Microbiology
Cartilage is altered to improve flexibility in a program of regular stretching.
a. true b. false
Biology & Microbiology