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Andrei [34K]
3 years ago
15

How did the banned substances DDT and PCBs end up in the ocean?

Biology
1 answer:
lbvjy [14]3 years ago
5 0

Answer:

PCBs and DDT are chemicals that were banned more than 30 years ago, but our air, water, land, and bodies are so contaminated that decades of cleanup efforts have yet to eliminate their threats to our health. Today, food is one of the most likely exposure routes to PCBs.

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If this form of gene therapy could be fine-tuned, how would it impact society?
alekssr [168]
We would be able to chose what every kid looks like. Almost like picking a barbie. There will be no more flaws in society, because no one will give their kids flaws if they don't have to. However, this can also have some good effects with genetic sicknesses. This could be stopped. This would be a great advantage from human society  
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3 years ago
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if a person wanted to explain the trenches at the bottom of the ocean to someone, which of the following would they include in t
Archy [21]
D. All of the above. 
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3 years ago
Frog hearts have a chamber where deoxygenated blood can mix with oxygenated blood. What structure would help prevent this mixing
denis-greek [22]
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7 0
3 years ago
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DNA sequence into RNA: AATGCATATGCA
NemiM [27]

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Hope it helps <3

6 0
3 years ago
Are gender traits completely a result of societal expectations? Justify your answer.​
ExtremeBDS [4]

Answer:

No. Gender traits in humans are largely determined by biophysical processes.

Explanation:

There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary. But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to. This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development.

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