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Lera25 [3.4K]
3 years ago
10

When the human body perceives internal and external stimuli, it responds to maintain a stable internal environment. What is an e

xample of an external stimulus that might cause eye squinting?
Biology
1 answer:
olchik [2.2K]3 years ago
8 0

Answer:

Bright light

Explanation:

This is why when you stay long in a dark room, then move suddenly into light, your instinctive response is to squint. This automatic response is for the eye to reduce the  amount of light entering the eye, to avoid eye damage. This gives time for the iris to respond and reduces the size of the pupil. When the iris relaxes and reduces the size of the pupil, then your eye acclimatizes to the bright light and the squinting stops.  

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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
Fill in the blanks pls n ty i will kiss u. !4?2!4$
Pani-rosa [81]
In order: 50% 0% 100%? 50%
you have a 50% chance of having healthy offspring b/c they do not possess the gene
0% b/c they all carry the disease
100% b/c all of them have the recessive gene
50% b/c there’s only two that are completely recessive (aa)
6 0
3 years ago
A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the
Zina [86]
<span>The correct answer is The cell is eukaryotic because it has chloroplasts. Prokaryotic cells don't have chloroplasts as they are only found in eukaryotic cells. The closest thing there is to chloroplasts are the cyanobacteria who function similarly and also photosynthesize but are in the end not chloroplasts themselves.</span>
4 0
3 years ago
Read 2 more answers
Which theory was revised to obtain the theory of plate tectonics?
attashe74 [19]

Answer:

Continental drift theory is the correct answer

6 0
3 years ago
Read 2 more answers
Question 6 Unsaved
muminat
I believe that last one is true (photosynthesis of plants)

good luck
4 0
2 years ago
Read 2 more answers
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