Nervous tissue provides movement and heat
a. true
b. false
Answer: b. false
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Clusters of nerve cell bodies that function as a local
integrating center are a. nerve cords. b. ganglia. c. a plexus. d. notochords. e. nerves.
Atmospheric sulfur dioxide returns to Earth in rain as weak sulfuric acid
Indicate whether the statement is true or false
Mature bone cells in lacunae that no longer divide. Maintain bone matrix and act as stress or strain sensors. Respond to mechanical stimuli such as increased force on bone or weightlessness. Communicate information to osteoblasts and osteoclasts (cells that destroy bone) so bone remodeling can occur.
What will be an ideal response?
Which statement best describes the value of fungi in the environment?
A. Fungi “fix” nitrogen from the air for use by plants. B. Fungi trap sunlight energy in the form of carbohydrates. C. Fungi release nutrients from organic matter. D. Fungi enrich the soil by decreasing the rate of decay of organic matter. E. Fungi remove toxic metals from the soil.