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daser333 [38]
3 years ago
7

In what ways has the atmosphere helped make Earth's environment more stable?

Biology
1 answer:
Murrr4er [49]3 years ago
5 0
The atmosphere<span> also </span>protects<span> living things on Earth from the sun's harmful ultraviolet radiation. A thin layer of gas called ozone high up in the </span>atmosphere<span> filters out these dangerous rays. The </span>atmosphere<span> also helps to sustain life of Earth.</span>
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Most of the rock material that we see on a daily basis falls into which category of rocks?
In-s [12.5K]

Answer:

Your answer is A) Sedimentary. The rocks and pebbles you see on a daily basis are most likely limestone, which is an abundant sedimentary rock.

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3 years ago
A state is looking to reduce the cost of transportation, which uses 7.10×10^14 BTUs per year. Currently the cost of 10^6BTUs is
Ilia_Sergeevich [38]

Answer:

$ 284 million dollars

Explanation:

If the energy usage of all transportation is 7.10 × 10¹⁴ BTU per year, if their efficiency is to increase by 20%, The new energy usage will be (1 + 20/100)7.10 × 10¹⁴ BTU per year = (1.02)7.10 × 10¹⁴ BTU per year = 7.242 × 10¹⁴ BTU per year.

The energy saved is thus the difference 7.242 × 10¹⁴ BTU per year - 7.10 × 10¹⁴ BTU per year = 0.142 × 10¹⁴ BTU per year.

Since 10⁶ BTU costs $ 20.00, then,

0.142 × 10¹⁴ BTU costs 0.142 × 10¹⁴ BTU × $ 20.00/10⁶ BTU = $ 2.84 × 10⁸ per year = $ 284 million dollars

So the state saves $ 284 million dollars in one year

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Which adaptation helps polar bears maintain a constant internal temperature (thermal homeostasis) in cold weather? three layers
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The polar bear is an animal which is prevalent in the arctic region of the world which is characterized by very cold icy climate.

They adapt to these climatic conditions by maintaining a body temperature of 37°C through its thick fur and tough skin. It also has an insulating fat layer (adipose tissues) which is very thick.

This insulation helps in keeping the animal very warm in extreme temperatures.

5 0
3 years ago
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Answer:

a. Proteins

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Chromosomes are made up of DNA tightly coiled many times around proteins

3 0
3 years ago
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