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jekas [21]
3 years ago
6

Which characteristics are used to describe air? Select three options.

Biology
2 answers:
beks73 [17]3 years ago
8 0

Answer:

Density, Pressure and Mass.

Explanation:

Air is a fundamental element, being formed by a combination of gases, water vapor and suspended particles, it can be described using the terms density, pressure and mass. It is therefore a vital substance for the maintenance of life on earth, alongside water and soil.

In addition, air is essential for climate, rain distribution and seed dispersion which favor agricultural production. On the other hand, it favors the development of various diseases by viruses, bacteria and microorganisms, which are carried by drafts.

The main elements that make up air are essentially nitrogen (78%) and oxygen (21%) and in small amounts argon (0.94%), carbon dioxide (0.03%), neon (0.0015%). Although it has weight and takes up space in the atmosphere, note that air is a collection of substances that has no color, smell, taste and that we cannot see or touch.

NemiM [27]3 years ago
5 0

Answer:

Density, Pressure and Mass are used to describe air.

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statuscvo [17]
To find out if the organisms belong to the same clade, the scientist should look to the phylogentic system of classification. 
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Which objective is referred to as the "scanning objective"?
Y_Kistochka [10]

Answer:

This question lacks options; they are:

a. 4x b. 10x c. 20x d. 100x

The answer is A

Explanation:

The objective lens is an integral part of a light microscope as it provides the viewer with the picture or image of the specimen. There are several types of objective lens depending on their magnification.

The lowest possible objective lens with the power of 4x is called the SCANNING OBJECTIVE. In combination with the eye/occular lens, it provides a magnification of 4x × 10 = 40x. The name of this lens comes from the fact that it provides a full scan of every part of the specimen being viewed before diversifying into a specific region by changing the objective.

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4 years ago
What is the process of mountain building called
Hitman42 [59]

I think the answer is: orogenisis


Good luck! XD

4 0
3 years ago
What is the biome represented in the climatogram? Multiple choice.
kramer

Answer:

B

Explanation:

Hello!

Let's define each choice and see what choice fits the criteria the most.

Temperate grasslands are open grassy areas with some population of trees, usually having around 500-900mm of rainfall every year.

Tropical rainforests usually do not have a dry season and rain all year round; it has around 1,800 to 2,500 mm of rainfall.

Tropical deserts don't have much cloud cover, hence why they won't get much rainfall. They're irregular and might only get around 250mm of rainfall per year.

Knowing this information, we can also see on the graph that there had been approximately 2100mm of rainfall this year, which helps us conclude that tropical rainforests are the correct answer with the rainfall range.

3 0
3 years ago
Read 2 more answers
HURRY HELP !
Aleksandr [31]

Answer: Hello! Here your answer.......

Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature. Water (H2O) is a very important abiotic factor – it is often said that “water is life.” All living organisms need water.

Hope this helps! (Brainly)♥

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