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blsea [12.9K]
3 years ago
8

Which purifying process exposes water to moving air?

Biology
2 answers:
Romashka-Z-Leto [24]3 years ago
6 0

Answer: The correct answer is: B Aeration.

A unit process where water and air are brought into intimate contact is known as aeration. The aeration of the flowing streams increases by turbulence and in industries during the process of aeration, the flow of water has opposite current to the air flow. The time of contact and the ratio of the air to water should be effective and sufficient to remove the unwanted gas and purify the air.

Aeration is used in decarbonation, stripping of ammonia and hydrogen sulphide, bacteria control etc.


Liula [17]3 years ago
3 0
The correct answer is B, aeration.
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Stem cells have the ability to divide
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Stem cells provide new cells for the body as it grows, and replace specialised cells that are damaged or lost. They have two unique properties that enable them to do this: They can divide over and over again to produce new cells. As they divide, they can change into the other types of cell that make up the body.

Hope it helps you in understanding!

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7 0
3 years ago
Does 1M of KCL have the same concentration as 1M NACL?
vichka [17]
  • 58.44 g

Explanation:

A 1 molar (M) solution will contain 1.0 GMW of a substance dissolved in water to make 1 liter of final solution. Hence, a 1M solution of NaCl contains 58.44 g

5 0
2 years ago
In many animals, height is an example of a polygenic trait. Which types of natural selection can affect polygenic traits? I. dir
Marat540 [252]

The question is incomplete as it does not have the options which are:

I. only

I. and II. only

II. and III. only

I, II, and III.

Answer:

I, II, and III.

Explanation:

The mechanism of natural selection can be explained for the trait which is determined by one gene but the traits which can be determined by more than one gene like height (polygenic trait), the selection becomes very complex.

The natural selection can be explained by the phenotype produced in a population and that depends on the genes.  The polygenic trait shows the variation in the population, therefore, it is impossible to predict only one mechanism and therefore all types of natural selection occurs on a population.

Thus,  I, II, and III are correct.

7 0
4 years ago
The tracts that connect the cerebellum to the brain stem are located in the
maksim [4K]

Answer:

medulla oblongata.

Explanation:

5 0
3 years ago
An infant is brought to the emergency de­partment and pronounced dead with the preliminary finding of sudden infant death syndro
Nina [5.8K]
Answer: 

1. How did the infant look when you found he or she/him or her?

2. Was the infants' head buried in a blanket?

3. Did you hear the infant cry out?

4. Were any of the siblings, jealous of the new baby?
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