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Mekhanik [1.2K]
3 years ago
8

What is the a series of choices between two characteristics that is used to i identify organisms is called a

Biology
1 answer:
azamat3 years ago
8 0
D. dichotomous key is the correct answer
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List the layers contained in the atmosphere and describe what is in each layer.
lisabon 2012 [21]

Answer:

Exosphere -The exosphere layer is mainly composed of extremely low densities of hydrogen, helium, and several heavier molecules including nitrogen, oxygen, and carbon dioxide closer to the exobase. The atoms and molecules are so far apart that they can travel hundreds of kilometers without colliding with one another.

Thermosphere - The aurora (Northern Lights and Southern Lights) mostly occur in the thermosphere. The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere. ... Temperatures in the upper thermosphere can range from about 500° C (932° F) to 2,000° C (3,632° F) or higher.

Mesosphere- Most meteors burn up in the mesosphere. A type of lightning called sprites sometimes appears in the mesosphere above thunderstorms. Strange, high-altitude clouds called noctilucent clouds sometimes form in this layer near the North and South Poles.

Stratosphere-The stratosphere is the second major atmospheric layer above the troposphere, extending in altitude from about 8 to 30 miles high. No weather occurs in the stratosphere. The statosphere contains over 15% of the total mass of the atmosphere, and is where the ozone layer is located.

Troposphere-The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols.

i hope this helps, good luck :)

7 0
3 years ago
What is the main enzyme that catalyzes Transcription?
Neporo4naja [7]

Answer:

RNA Polymerase

Explanation:

I took a bio class last year

7 0
3 years ago
How do humans depend on plants and animals?
Hitman42 [59]
Plants and animals provide food for humans. Plants cycle the air for humans too.
5 0
3 years ago
What is the meaning of life?Why are we chosen to live/be on this world?
Alexeev081 [22]

Answer:

A special characteristic of one living creature is to grow, to do metabolic processes to react to adapt and to reproduce.

Explanation:

The purpose of human life is to be aware of the existence, to understand existence,  to be responsible and to enjoy.

Why are we chosen to live in this world it is not known. There are theories that RNA plays an important part in this. The process that many forms of life developed through history by mutation and natural selection. And the most common answer to a question why are we here is the simple process of evolution.

3 0
3 years ago
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Answer the questions<br>(100 pts for the individual who answers all the questions correctly)
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It’s ok u can search the water mark for answer key it is Ye or
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3 years ago
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