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timofeeve [1]
3 years ago
10

All of the following are traits of echinoderms except

Biology
2 answers:
NNADVOKAT [17]3 years ago
7 0
Skeleton is the answer
inessss [21]3 years ago
3 0

The answer is actually <em>B.) a pair of antennae </em>

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Pls help meeeee!!!!! It should be easy
matrenka [14]

1. condensation

2. plasma

3. chemical change

4. solid

5. density

6. gas

7. takes up space

8. change of state

9. in the gas state

10. melting

11. true

12. true

13. false

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3 0
2 years ago
Read 2 more answers
5) Explain in your own words, what each of the following are:
Ludmilka [50]

Answer:

a.)<u>fault</u>:A fault is a planar crack or discontinuity in a volume of rock over which rock-mass motions have caused considerable displacement.

b.)<u>focus</u>:The focus is on the location where an earthquake begins deep under the Earth's crust.

c.)<u>epicenter</u>:The epicenter of an earthquake is the point on the earth's surface that is vertically above the epicenter.

d.)<u>seismic waves</u>:Seismic waves are elastic waves that occur in the ground as a result of an earthquake or other natural occurrence.

Explanation:

Hope this helps!

Please mark me as Brainlinieast.

5 0
2 years ago
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
select all of the following that are examples of how organisms respond to external stimuli. multiple select question. a person r
Airida [17]

The answer is a person removes their hand after touching a hot stove and a person turns their head toward the source of loud noise.

External stimuli are factors outside of the body that is taken in by receptors and will lead to a response. Examples of external stimuli include temperature changes, vision, hearing, tasting, smelling, and even sunlight for plants.

Learn more about External stimuli here:

brainly.com/question/11557304

#SPJ4

6 0
1 year ago
When a drug enters the body via oral ingestion, smoking, snorting, or injection, the chemicals move through the bloodstream and
Anna007 [38]

Answer:

Blood Brain Barrier(BBB)

Explanation:

This is a biological interface of special endothelial cells of astrocytes, pericytes , capillaries,  neurons and other  structures, acting as a physical barrier or  gate separating the Central Nervous system from the peripheral  blood circulations. Thus it  formed a tight junction serving as a  physical barrier to  selectively regulate the entrance of substances from the   cerebral blood flow   into the brain,  therefore maintaining homeostasis of the brain.

From above any  substances  absorbed into the blood stream  irrespective of the mode of entry  are transported through  the BBB, and  are selectively  regulated to enter the brain cells by the BBB's   interactions with the blood vessels, hormones etc.

Basically it allows the passage of nutrients,  a few  drug, hormones and resists certain toxins and pathogens for the brain homeostasis.

5 0
3 years ago
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