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Andrej [43]
3 years ago
9

2. The learners then wanted to investigate whether exercise has an effect on heart rate.

Biology
1 answer:
g100num [7]3 years ago
6 0

Answer:

b

Explanation:

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Explanation: its correct

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What two things combine to make up our modern evolutionary theory?
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Darwin's "Origin of Species" and Lamark's "Theory of Inherited Characteristics" 
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"Meghan was driving home when she heard a tire explode on the car right next to her. As a result, her heart started pounding and
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Sympathetic nervous system

Explanation:

The sympathetic nervous system of the autonomic division prepares the body for stress or emergency conditions by generating the “fight-or-flight” responses. The sympathetic nervous system triggers the release of stress hormones from the adrenal medulla to generate the set of physiological responses.

There is dilation of the pupil, and an increased rate of heartbeat and increased blood pressure. Other responses include dilation of airways and dilation of blood vessels that supply blood to skeletal muscles, heart muscles, liver, etc. Under the given emergency condition, the sympathetic nervous system of Meghan was activated to generate the fight or flight response.

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How does geographic distribution of organisms support evolutionary theory?
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Because the organism is distributed across the world, and isn't seen anymore, scientists can conclude tat they must have evolved. They can compare one species to the fossils they may have found, and determine that they were related. Then by looking at the species on another part of the world compare the same fossils to other animals and determine that they are similar, sharing a common ancestor.
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