Biology, 25.02.2020 06:23 chambersjamal05
Physiologically, the degree of skeletal muscle contraction is controlled by: (choose all that apply) Select one or more: a. the number of motor units that are activated. b. the frequency of motor neuron action potentials in each motor unit. c. the amount of tonus. d. positive feedback from the muscle fibers to the motor neuron.
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Acid rain is the direct result of acid released by burning fossil fuels. select the best answer from the choices provided ot o f true or false
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Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?
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What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.
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What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex
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Physiologically, the degree of skeletal muscle contraction is controlled by: (choose all that apply)...
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