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schepotkina [342]
3 years ago
10

Did your pulse change when standing? Why do you think a change did or did not occur?

Biology
1 answer:
pentagon [3]3 years ago
3 0

Explanation:

The pulse of the bodies raises for the first 20 seconds after sitting for a prolonged period of time and then to a standing position. It should, however, return to normal afterwards. The heartbeat of the body decreases because as you travel the blood needs to flow to the active areas and the blood flows downward from gravity, however you still need to pump blood to your brain. The rise in blood demand makes the heart pump more rapidly.

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Ede4ka [16]

Answer:

part A is the answer

Explanation:

The tympanic cavity is an air chamber; it contains a chain of movable bones which transmit the vibrations of the tympanic membrane across the cavity to the middle ear.

3 0
3 years ago
What group in an ecosystem performs photosynthesis​
ZanzabumX [31]

Answer:

producers

Explanation:

producers are plant which are at the base of an ecosystem.

3 0
3 years ago
Investigators have arrived at a crime scene and are ready to search for evidence. What needs to happen next?
denpristay [2]

Answer: C . They should map out a grid to systematically look for evidence.

Explanation:

As a crime has been committed, the investigators do not need a search warrant so there is no need to ask a Judge for one so option A is incorrect.

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Setting up a grip to enable the systematic analysis of evidence is their most likely course of action so option C is correct.

Even if the case is not complicated, evidence still needs to be searched for so option D is wrong.

6 0
2 years ago
What does the Solar System revolve around and how long does it take for one revolution?
mixer [17]

Answer:

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Explanation:

3 0
3 years ago
Which of these is a biotic factor of an ecosystem? A. the bacteria that live in the intestine of a rabbit B. the rocks that prov
ra1l [238]
A. The bacteria living inside the intestines of a rabbit. Biotic creature are things that are living, breathing, and need food/water to live. Hope my answer was useful. <span />
4 0
3 years ago
Read 2 more answers
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