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NikAS [45]
4 years ago
8

What is speciation a result of

Biology
1 answer:
erik [133]4 years ago
3 0

The first one is correct

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What were the first organism to form in early earth?
irakobra [83]

Answer:

Cyanobacteria otherwise known as "blue-green algae"

Explanation:

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4 years ago
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Sam is out for a long run on a hot day. He is dehydrated and does not have water with him. As he tries to maintain a high exerci
Misha Larkins [42]

Answer:The dual cardiovascular demands includes: Option A (The need to pump additional blood to the surface of the skin.) And

Option E (The need to pump additional blood to working muscles)

Explanation:

When an individual is performing exercise under the hot atmosphere, the following demands are required:

--> there would be physiological increased demand of the skin to prevent further dehydration .

--> there would be increased energetic demands for muscular activities.

1.) The blood flow to ACTIVE MUSCLES during prolonged exercise under a hot day.

There is increase in carbon dioxide and hydrogen ions, decrease in oxygen levels will cause the smooth muscles of the blood vessels located at the active muscle sites to relax. This enhances the in flow of blood supply oxygen which is needed for the generation of Adenosine triphosphate (ATP) for energy. This requires a greater cardiac pumping capacity.

2) The flow of blood to the skin during during prolonged exercise in a hot day.

To avoid dehydrations during exercise which occurs through the lungs and skin, there is increased cardiac output to remove excess heat generated through thermoregulation of cutaneous circulation.

8 0
3 years ago
Need help ASAP please and thank you !!!
irakobra [83]

Answer: i believe it’s A and C

Explanation: i took biology and remember these lessons

3 0
2 years ago
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Judging from the map, which region probably has cooler summers than it would without the effect of a nearby ocean current?
fredd [130]
Maybe a place that is by the equator
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4 years ago
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Explain why water used by plants and animals today has been around for millions of years.
Hitman42 [59]

Answer:

All the water that is on earth today is the water that has been on the planet. Freshwater is a million years old. The same water is flowing in a continuous loop in the form of falling as rain and snow from the clouds to the earth’s surface. Running in rivers and ponds. This is due to the water cycle. The cycle where the water evaporates in the atmosphere and is from the atmosphere and then cloud loses the water as rain or snow.

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4 years ago
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