Answer:
contractile vacuole
Explanation:
contractile vacuole is used for balance of water,salt etc
One cardiac cycle is .8 seconds. A complete heartbeat is produced in one cardiac cycle. <span>The period of time that begins with contraction of the atria and ends with ventricular relaxation is known as the cardiac cycle. The period of contraction that the heart undergoes while it pumps blood into circulation is called systole.</span>
they would be melted and vaporized in the atmosphere.
Explanation:
Meteoroids is piece of solar rock before it strikes the earth surface. Meteorites are rocks that strikes the surface of the earth from space.
- In earth science, meteorite impacts are often attributed with mass extinctions on the earth surface.
- For a meteorite to reach the earth surface, it must has a very large diameter.
- This big rocky mass must be able to escape the earth geomagnetic field and the ionizing radiation in the upper reaches of the earth atmosphere.
- Meteoroids of smaller sizes cannot escape the earth's atmosphere and would completely ionized and melted.
Learn more:
Meteorite brainly.com/question/6372454
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Answer:
Your skin regulates your body temperature through blood vessels and through the process of sweating. The skin is in effect your body's thermostat. When you're out in cold weather, your skin triggers shivering so the blood vessels will contract and keep you as warm as possible.
Explanation:
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