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kupik [55]
3 years ago
12

Earth's biosphere is?

Biology
2 answers:
Tpy6a [65]3 years ago
7 0

Answer:

<h2><em>every biome that has living things</em></h2>

Explanation:

Alika [10]3 years ago
5 0
A. Every biome that has living things.
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Please help ASAP! Describe at least one way in which each of Earth’s subsystems was altered during the Precambrian era.
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The Precambrian era envelopes the major bulk of the history of the Earth, beginning from the creation of the planet approx 4.5 billion years ago and terminating with the origination of composite, multicelled forms of life approximately 4 billion years after.

The Precambrian refers to the earliest of the geologic ages that are signified by the distinct layers of sedimentary rock. The Earth was about more than six hundred million years old when life started. The planet had cooled down from its native molten state, creating a solid crust and oceans formed by water vapor in the atmosphere.

At about three billion years ago, the atmosphere of the Earth was virtually devoid of oxygen. At approximately 2.4 billion years ago, oxygen was discharged from the seas as a waste product of photosynthesis by cyanobacteria. The levels of the gas slowly raised, attaining about 1 percent around two billion years ago.

Approximately 800 million years ago, the levels of oxygen attained about 21 percent and started to breathe life into more composite species. The oxygen-rich ozone layer was also created, protecting the surface of the Earth from the harmful solar radiation.


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<span>The hyphae, or feeding structures, reach deep into the wood to obtain nutrients.</span>
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Which of the following is the only marsupial found in North America?
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The blood cells likely placed in a "hypotonic solution".

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Healthcare facilities preserve human blood cells in a plasma solution that has the proper salt and protein ratios. Such solution is formulated to be mildly hypertonic to the red cells, thus maintaining the integrity of the cells and avoiding hemolysis.

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