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Art [367]
3 years ago
11

Air pollution only occurs as a result of human activity

Biology
2 answers:
lara31 [8.8K]3 years ago
7 0
The answer to this is false, they’re are many different non-human air pollutants that exist
vagabundo [1.1K]3 years ago
5 0

Answer: False.

Explanation:

Air pollution occur when harmful substances or gases are released into the air which is harmful to humans, plants and animals.

It is not all human activities that lead to air pollution , some are of natural sources.

The non human activity that lead to air pollution are dust and wildfire, dust occur when a vast land is been swept or blown by wind,volcanic eruption which lead to release of particulate substances,animal digestion I.e digestion of food eaten by animals especially cattle lead to release of methane as waste product which cause air pollution e.t.c

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During sexual reproduction, two gametes merge to create a zygote that is a genetic mix of its two parents. For each statement, i
Elenna [48]

Answer:

1. 50% of the genome comes from each parent because it is crucial otherwise if the ratio changes, the zygote may not form and if formed the fetus may have some other kind of chromosome number related syndromes etc.

2.  Sexual reproduction produces greater genetic variability than asexual methods. This is because of the process of crossing over during meiosis that exchange the segments of chromosome that is necessary for producing mutations and genetic variability.

3. 50% of chromosomes match with each parent because both of the parents contributed 23 chromosomes and exactly 50% of their genome.

4. The gametes must be produced by two different individuals cause that is the main purpose of sexual reproduction and give better survival like this to the forming next generation. Not to mention produces greater genetic variability among species.

5. Plants always produces both eggs because they are hermaphroditic in nature.

7 0
2 years ago
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Pepsi [2]
The builder can he fix it
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2 years ago
All existing matter and space is referred to as the _______________
Musya8 [376]

Answer:

The universe is the answer

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2 years ago
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Which of the following statements explains why plants are essential to the carbon cycle?
hram777 [196]

Answer:

Plants absorb carbon dioxide, water and sunlight to make their own food, grow and release oxygen through photosynthesis. They're a huge part in keeping our air clean.

Explanation:

Hope this helps.

5 0
2 years ago
In Avery's experiment, he used DNase, RNase or proteinase to treat the heat killed S strain to see what component in the debris
nevsk [136]

Answer:

S strain

Explanation:

The Avery experiment demonstrated DNA is the genetic material. It expanded upon the findings made by Griffith.

They used Pneumococcus; Smooth strain which was virulent and the Rough which was not.

Cultures of heat killed smooth strain were prepared after which it was treated with DNases ,RNases and Proteinases to remove DNA, RNA, and proteins respectively. It will then be introduced to living Rough strain.

When treated with RNases only the RNA will be destroyed and transformation will take place leading to colonies of S stains being formed.

Only when treated with DNase did the colonies S strain fail to be formed.

7 0
3 years ago
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