How does the nervous system change with aging?
What will be an ideal response?
The following changes occur: brain mass decreases; conduction velocity of nerve fibers decreases; release of neurotransmitters occurs more slowly; senses (hearing, vision, taste, and smell) become less acute.
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Which of the plant growth regulators is not transported, but stays within the cell that produced it?
a. gibberellins b. ethylene c. phytochrome d. cytokinins e. auxins
From the equator to latitudes 10° north and south, high rainfall, high humidity, and mild temperatures can support
____________________. Fill in the blank(s) with the appropriate word(s).
The animals used in the text to show variation in
domesticated forms are a. pigeons. b. chickens. c. pigs. d. dogs. e. cats.
What concepts enable two or more species with similar niches to coexist in a community? Select all that apply.
A. allopatric competition B. resource partitioning C. bottom-up control D. overlapping niches E. character displacement