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yanalaym [24]
2 years ago
14

Which era of geologic time was the longest

Biology
1 answer:
Nina [5.8K]2 years ago
6 0
The answer to your question is indeed <span>Precambrian. It lasted about 4 billon years.</span>
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Cual es la diferencia entre cigoto; embrión y feto
astra-53 [7]

Answer:

in spanish-Los términos embrión y feto se refieren al bebé en desarrollo dentro del útero de la madre. ... Un embrión se denomina feto a partir de la undécima semana de embarazo, que es la novena semana de desarrollo después de la fertilización del óvulo. Un cigoto es un organismo unicelular resultante de un óvulo fertilizado.

Explanation:

in english- The terms embryo and fetus both refer to the developing baby inside the mother's womb (uterus). ... An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization of the egg. A zygote is a single-celled organism resulting from a fertilized egg.

8 0
3 years ago
A change in a populations________ over time is called biological evolution
motikmotik

Answer:

gene pool or gene frequency

Explanation:

Biological Evolution has to do with how a population's gene pool changes over time.

4 0
3 years ago
Read 2 more answers
Temperature inversions occur naturally in the stratosphere and thermosphere, but also occur closer to the surface of earth in th
skelet666 [1.2K]

Temperature inversion or thermal inversion is a phenomenon during which the temperature increase when there is an increase in the altitude. It is an uncommon process that happens in the troposphere-the layer of atmosphere closest to the earth.  

When there is an increase in temperature with altitude that warm air acts as a blockage for the cool air near the surface of the earth. So this is just opposite to the normal behavior of the air, where it becomes cooler with an increase in altitude.

So how air circulation behaves during inversion?

So as we said that the cool air nearer to the earth will be blocked by a layer of warm air. This blockage will hinder the circulation of air upwards from the lower layers. Let’s see how:

• As we know that, warm air is less dense and more buyout than cool air and normally less dense warm air is close to the earth and cool air is in above layers. But when the process is reversed, this warm air acts like a blanket for the proper circulation of air. Due to this, many environmental pollutants which normally leave the earth during air circulation get trapped in our air.  

• The trapped environmental pollutants like nitrogen oxides and hydrocarbons get convert into harmful ozone that ultimately deteriorates the quality of air and causes problems like smog.

• The improper air circulation also causes suspension of the harmful gases near the earth instead of allowing them to leave the earth atmosphere. This ultimately causes air pollution.  

• When smoke will not rise, carbon dioxide will be build up in the atmosphere; this will cause greenhouse effect and global warming.

Therefore, air circulation behaves very different during temperature inversion process and poses hazardous effects on global climate.

Hope it helps! :)

6 0
3 years ago
What is 420 hg = _____ cg<br> i dont know how to do this?????
miskamm [114]
I think the answer would be 420hg=4,200,000cg

6 0
3 years ago
Which do you think is most important about sleep? Write 2-3 sentences to explain
Gnoma [55]

Answer:Sleep helps keep your heart healthy

A regular sleep pattern can help to lower the levels of stress and inflammation to your cardiovascular system, which in turn can reduce your chances of a heart condition.

Explanation:

Hope this helps

Stay Safe

plz give me brainiest

7 0
3 years ago
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