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dmitriy555 [2]
3 years ago
7

What is the main source of raw material for the production of plastics?​

Biology
1 answer:
Marysya12 [62]3 years ago
3 0

Answer:

Crude oil is the main source

Explanation:

hope it helps

Pls mark as brainlist

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Which of these is a way climate change positively affects organisms?
ArbitrLikvidat [17]

<u>Answer:</u>

<em>Climate change positively affects organisms by </em><em><u>providing them new habitat. </u></em>

<u>Explanation:</u>

Climate change induces <em>changes in various parameters of an ecosystem </em>like temperature, precipitation, soil properties etc. habitats may undergo changes that make it unsuitable for native organisms to live in.

But this <em>new conditions</em> may be favourable for some other kind of organisms to thrive and flourish.

<em>For example, </em>when temperature of a lake increases due to climate change warm water aquatic organisms find a new habitat in the lake. But this threatens the life of <em>native cold water organisms of the lake. </em>

Thus climate change doesn’t bring any benefits to living world without harming one or the other <em>group of organisms. </em>

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3 years ago
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6. Marty Martian recently met Melissa Mercury online.
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Answer: there is a 50% chance that they will have kids with blue hair and 50% chance they would have a blue body

Explanation:

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3 years ago
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Which of the following will lower blood pressure? Which of the following will lower blood pressure? angiotensin II atrial natriu
garik1379 [7]

Answer:

Angiotensin II atrial natriuretic peptide(ANP) lowers blood pressure.

Explanation:

Increase in plasma volume leads to increase in blood pressure and a decrease in plasma level also leads to a decrease in the blood pressure. ANP is an enzyme which stimulates the decrease in blood levels through certain factors thereby causing a decrease in the blood pressure.

Meanwhile ADH stimulates increase in blood plasma levels thereby increasing the blood pressure.

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In some species of Drosophila, there are genes on the Y chromosome that are not on the X chromosome. Imagine that a new allele a
mr_godi [17]

Answer:

True

Explanation:

The Drosophila like the mammals possess X and Y chromosomes but as in males in which the XX is female and XY is male, the sex In Drosophila is not determined by the presence of Y chromosomes as a male determining factor are present on the autosomes.

However, the Y chromosome is important for males as they are involved in the formation of the sperms therefore the presence of Y is important. In the given question if the allele is present ion the Y chromosome which can reduce the size therefore the allele is passed on to the males only ans no females.

Thus, true is the correct answer.

the fly is female (Bridges 1921, 1925). Thus, XO Drosophila are sterile males. In flies, the Y chromosome is not involved in determining sex. Rather, it contains genes active in forming sperm in adults.

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Plants have a large central vacuole.what is the function of the central vacuole in plants
joja [24]

The function of the central vacuole is to maintain proper pressure within the plant cells to provide structure and support of the growing plant.

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