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brilliants [131]
3 years ago
7

What causes the temperatures in the lower troposphere to be warmer?

Biology
1 answer:
Misha Larkins [42]3 years ago
4 0
IN the troposhere the temperature generally decreases with altitude. The reason why the temperature decreases in altitude is that the troposhere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection. This causes the temperatures in the lower troposhere to be warmer.
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20 POINTS<br> describe the outer core layer of the earth please dont copy from somewhere else
Katen [24]

<u>The outer core of the Earth is a liquid layer and it is mainly made up of the metals iron and nickel. </u>

<u>It's also made up of small amounts of other substances. </u>

<u>The outer core is responsible for Earth's magnetic field. </u>

<u>The outer core is the second layer of the Earth.</u>

4 0
3 years ago
Read 2 more answers
The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the age
ozzi

Answer:

poliinators and flagellated sperm

Explanation:

Cycads (phylum Cycadophyta) together with Ginkgophyta, Gnetophyta, Pinophyta, Pteridospermales and Cordaitales  belong to the gymnosperms (naked seed-producing plants). They are different than angiosperms which produce encased seeds within an ovary.

Cycads (but also Ginkgo) produce swimming sperm that is different than all other groups which produce sperm without swimming flagella.

Also, unlike other groups of gymnosperms, cycads have specialized  pollinators, beetls.

6 0
3 years ago
**Easy**quick**extra points**
12345 [234]

Answer:

A Trust me I'm a genius

Explanation:

I pretty sure it would only make sense to me

6 0
2 years ago
Read 2 more answers
How is HIV contracted, and what are the treatment options?
Katena32 [7]

I believe the correct answer is: HIV is spread during unprotected sex or through contact with infected blood; it cannot be cured, but early treatment can minimize the long-term consequences.

<h2>Explanation:</h2>

Human Immunodeficiency Virus is a type of virus which causes an impairment of the immune system of the person making them susceptible to diseases such as tuberculosis, influenza and any other disease that can exploit this opportunity. It is spread by a person coming into direct contact with infected bodily fluids such as saliva during deep kissing, semen during intercourse, blood after an accident or even fluids when sharing needles and syringes for drug addicts. There is no cure but the current form of treatment slows down the virus to prevent some consequences.

<h2>Further Explanation:</h2>

The virus is enters the body through open wounds or surfaces such as the vagina or mouth where the skin is very thin and can tear. After penetrating the skin, it attaches to specific immune cells called CD8+ T-cells on points called receptors. It then enters the cell and replicates itself in the nucleus of the cell and as it goes out, it kills these immune cells making the person to have a weak immune system. The current drugs used called AntiRetroVirals (ARVs) such as the drug Zidovudin stops the virus from replicating thus reducing the total amount of virus in the body called the Viral Load. Some drugs target enzymes called proteases and reverse transcriptase that help the virus to replicate. This viral load is what is counted to estimate the total volume of HIV someone has in their body. Infected persons should use protection while having sex and also avoid sharing sharp objects to prevent transmission. They also need to take their medication to make them much more healthier in addition to taking proper balanced diets.

Level: High School

Subject: Biology

Topic: The Immune System

4 0
3 years ago
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Pollen develops from the mitotic division of microspores. given this information, to which specific stage in a heterosporous lif
miv72 [106K]

The mitotic division of microspores belongs to the gametophyte stage of the life cycle of the pollen.

<h3>What are pollen grains?</h3>

Pollen are very important in the propagation of a flower. They need to be involved in the process of fertilization. As a matter of fact pollination is the transfer of pollen grains from the anther to the stigma of a flower.

Now we can see that there are various stages in the development of pollen. The mitotic division of microspores belongs to the gametophyte stage of the life cycle of the pollen.

Learn more about pollen:brainly.com/question/21021623

#SPJ1

4 0
1 year ago
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