The immune system. Hope this helped
Answer:
by experimentation and observation
Explanation:
Dna has effected the scientist by clasfiying the organnisms. it causes the organisms and dna to get mixed up and be a mixed up organism. a scientist could be getting the wrong answer if it was actually dna.
When a person is anxious or fearful, the autonomic nervous system shunts blood away from peripheral veins to the core of the body - TRUE
- Sympathetic stimulation of blood vessels causes arteries and arterioles (resistance vessels) to constrict, increasing vascular resistance and reducing distal blood flow.
- The increased vascular resistance that results from this across the body raises arterial pressure.
- When our bodies shift into superman mode, the second signal is transmitted to the hypothalamus, where it activates our autonomic nerve system,
- which is in charge of the fight-or-flight impulse.
- Our bodies receive an adrenaline boost as well as an increase in heart rate and blood pressure. When you are afraid, you get that rush.
learn more about autonomic nervous system here: brainly.com/question/4143211
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I believe it’s “B” as typically thermophiles thrive in high temperatures, between 45-80°c
