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ryzh [129]
2 years ago
12

What’s a convection current and how is it caused?

Biology
1 answer:
kherson [118]2 years ago
7 0

Answer:

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.

Explanation:

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The American College of Sports Medicine's recommendations for physical activity include a minimum of
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Answer:

Option-A

Explanation:

The American College of Sports Medicine (ACSM) now does not create the physical guidelines of their own instead produces the guidelines produced by the Physical Activity Guidelines for Americans.

The guidelines are different for different age groups and for the adults which is the group which likes doing physical training, the guidelines suggest that a person should do either 2.30 hours to 5 hours of the moderate exercise per week or 75 minutes to 150 minutes vigorous exercise per week.

In the given question, the most suitable option which follows the guideline of the ACSM is option-A.

Thus, Option-A is the correct answer.

5 0
3 years ago
Question 3
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High-density means full and low density is more empty

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Explain one way that HYDROGEN GAS is commercially produced
Westkost [7]

Explanation:

There are a number of ways to produce hydrogen: Natural Gas Reforming/Gasification: Synthesis gas, a mixture of hydrogen, carbon monoxide, and a small amount of carbon dioxide, is created by reacting natural gas with high-temperature steam. The carbon monoxide is reacted with water to produce additional hydrogen.

As of 2020, the majority of hydrogen (∼95%) is produced from fossil fuels by steam reforming of natural gas, partial oxidation of methane, and coal gasification. Other methods of hydrogen production include biomass gasification and electrolysis of water.

6 0
3 years ago
What are the similarities between DNA and RNA molecules?
liraira [26]

Answer:

Both DNA and RNA are made up of monomers called nucleotides.

Both RNA and DNA both have 3 nitrogenous bases: Adenine, Cytosine and Guanine.

They are both necessary for the cell to produce proteins.

DNA and RNA both contain pentose sugars.

DNA makes mRNA which then is translated into protein.

Explanation:

5 0
2 years ago
Where is groundwater found?
prisoha [69]

Answer:

b

Explanation:

100

8 0
3 years ago
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