BIOLOGY MIDDLE SCHOOL

Which layer of the Earth makes up most of its volume?

Answers

Answer 1
Answer: The Outer Core (C) (2270 km), is a molten nickle-iron alloy. The Mantle (B) is approximately 2885 kilometers thick and is the middle layer of the Earth. The Mantle is made up of minerals rich in the elements iron, magnesium, silica, and oxygen. The Mantle makes up approximately ~85% of the Earth's volume.

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Explain how do groundwater erosion and deposition produce a limestone cave

Answers

due to the moisture and stabilitty the the matter in it can be produced.

Which layer of the earth is where weather occurs

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It's the troposphere if I remember correctly. :)
hi if it help plz pick as best tnx
ok so .....
Weather does not occur in any of the earth's layers. 

Weather occurs in the lowest layer of the earth's atmosphere which is called the troposphere

The image shows a paramecium and a bacterium. One of these organisms is very good at rapidly adapting to environmental changes because it has the ability to take in stray genetic information from the environment. Which structure allows the organism to do this?

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Genetic variation enables bacteria to adapt to changes in their environment. Since, bacteria reproduce asexually (binary fission), they can share genes (genetic transfer) via other mechanisms such as conjugation (exchange of genetic material through direct contact between two bacteria), transformation, and transduction(exchange of genetic material via bacteriophages).

Transformation is a process by which bacteria takes in DNA from its environment through the cell membrane.

Answer:

The Answer is number four

Explanation:

I got it right

HELP PLEASE!!!!!! The bar-tailed godwit is a type of shorebird that makes an annual migration from Alaska to New Zealand and back. The birds make each 11,500-kilometer (7,145-mile) trip by flying over the Pacific Ocean in about nine days, depending on weather, wind speed, and direction of travel. One bird was observed to make the entire journey uninterrupted, a feat that is comparable to a human running a nonstop seven-day marathon at 70 kilometers per hour (43.5 miles per hour). Would you expect the flight (breast) muscles of bar-tailed godwits to use mainly aerobic respiration or fermentation? Explain your answer.

Answers

Answer:

They probably use aerobic respiration.

Explanation:

A travel distance of 11.500 kilometers in 9 days covered by flying surely requires a lot of energy.

  • If cells are fermenting, the ATP (energy) they generate only comes from glycolysis, which produces 2 ATP molecules.

  • If they are using aerobic respiration, glucose is completely oxidized to CO₂ through glycolysis and the Citric Acid Cycle, and the electrons enter the electron transport chain to finally reduce oxygen into water. In the complete process, up to 36 ATP molecules are produced.

In sum, aerobic respiration is much more efficient to generate energy than fermentation, so it's probably the main metabolism of the flight muscles in bar-tailed godwits.

What type of glands are the gastric glands?A. Endocrine glands release contents into the bloodstream

B. Exocrine glands release contents into the bloodstream

C. Exocrine glands release contents into ducts

D. Endocrine glands release contents into ducts​

Answers

Answer:

B

Explanation:

The secretions of the exocrine gastric glands - composed of the mucous, parietal, and chief cells - make up the gastric juice. The products of the endocrine cells are secreted directly into the bloodstream and are not a part of the gastric juice

Early as the 9th century, it was suggested when organisms change, they may be better able to ____________.reproduce
 find a home
 adapt to survive
​

Answers

Reproduce is the answer
Reproduce is the answer
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