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Marianna [84]
3 years ago
12

Why do mountaineers become breathless as they reach high altitudes?

Biology
1 answer:
garik1379 [7]3 years ago
3 0

Answer:

C.  Oxygen concentration decreases as altitude increases

Explanation:

Higher altitudes have lower levels of oxygen and decreased air pressure.

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In 1992, the U.S. Environmental Protection Agency (EPA) introduced ____ as a voluntary labeling program designed to identify and
madam [21]

Answer:

<em>energy star.</em>

Explanation:

Its main objective is to help consumers, businesses, and industry save money and protect the environment through the adoption of energy-efficient products and practices.

3 0
3 years ago
One species of a small birdlike animal has an extremely variable tail length, which is a highly polymorphic trait. Geneticists h
Troyanec [42]

Answer:

D. 12cm

Explanation:

there are 8 A1, C1 and so on alleles there, this will be 8 cm and there are about 8 a2 and so on alleles,  this will be 4cm.

8 + 4 = 12cm

6 0
3 years ago
Which of these is least likely to be an adaptation of an organism to its environment?
Mkey [24]

Answer:

The correct answer is "C. Cave fish have evolved degenerated eyes because they have no use for vision in dark, underwater caves."

Explanation:

All of these statements about organism adaptation to its environment are true, but the real reason why cave-fish are blind is not because there's no use for their eyes in the dark, but because being blind saves them energy, as using one's vision requires the activity of photoreceptive cells and neurons, and underground caves are lacking in both food and oxygen.

4 0
3 years ago
Where did the First potato grow
Ymorist [56]

Answer:

Peru

Potato Facts: Origins of the Potato

The Inca Indians in Peru were the first to cultivate potatoes around 8,000 BC to 5,000 B.C. In 1536 Spanish Conquistadors conquered Peru, discovered the flavors of the potato, and carried them to Europe.

Explanation:

Hope this helps!!!!!

Forever friend and helper,

Cammie:)

3 0
3 years ago
Read 2 more answers
In principle, how many reading frames in an RNA molecule can potentially be translated into protein?
Jobisdone [24]
I think the answer would be 3
8 0
3 years ago
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