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4 years ago

What gas made up the largest portion of earth's atmosphere for most of earth's history

1 answer:

7 0

Gases in Earth's Atmosphere. Nitrogen and Oxygen are by far the most common. Dry air is composed of about 78% Nitrogen (N2) and about 21% Oxygen (O2). Argon, Carbon Dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases.

So therefore Oxygen is the gas that makes up the largest portion of the Earths Atmosphere.

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Where is the carbon in the frigid Arctic? How much is in biomass?

djyliett [7]

Answer:The North frigid zone, between the Arctic Circle 66.5° N and the North Pole 90° N. Covers 4.12% of Earth's surface. The North temperate zone, between the Tropic of Cancer 23.5° N and the Arctic Circle..

Explanation:

hope this helps u

4 0

3 years ago

The original pith is still located in the center of the stem (inside the vascular bundles). What type of cells makes up the pith

Brut [27]

<h3><u>Answer;</u></h3>

Parenchyma cells

<h3><u>Explanation;</u></h3>

<em><u>The pith is a part of the Ground tissue together with the cortex. The cortex is located to the outside and/or around the vascular bundles, while the pith is locate in the center of the stem. </u></em>
Both the cortex and pith are composed mainly of parenchyma cells. On the other hand collenchyma cells give support to the stem and may occur under the epidermis in the cortex.
Pith is composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant.

4 0

3 years ago

Please help I was supposed to have this done 2 days ago also I’ll give a lot of points for the right answers :)

antoniya [11.8K]

Answer:

hypertonic solution=B

semipermeable membrane=D

Water level rise=F

Water level lowers=A

Solutes=C

hypotonic solution=E

Explanation:

hope that helps:)

6 0

3 years ago

Types of idioms that talk about being happy<br>

SSSSS [86.1K]

Answer:

On cloud nine

Like a dog with two tails

Full of the joys of spring

Happy as Larry

On top of the world

Over the moon

In seventh heaven

Happy-Go-Lucky

Happy Camper

Bursting with Joy

Grinning From Ear to Ear

<em><u>hope this helps!</u></em>

7 0

3 years ago

What is the expected result of a nation whose population is outstripping its resources and ability to feed its people, if its pe

Scorpion4ik [409]

Answer:

a lot of sickness, homelessness and deaths

Explanation:

make up some reasons for those. It's pretty self explanatory.

7 0

3 years ago