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kobusy [5.1K]
3 years ago
7

What releases toxins that can kill marine life?

Biology
1 answer:
strojnjashka [21]3 years ago
6 0
The toxins are the substances which decreases the conc. of oxygen in wzater and increase toxicity
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Nata [24]

Answer:

A if not A then its D

Explanation:

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3 0
3 years ago
A mutation that involves one or a few nucleotides is called
inysia [295]

A mutation that involves one or a few nucleotides is called

a) mutagen

b) inversion

c) point mutation

d) translocation

Answer:

c) point mutation

Explanation:

When only one or a few nucleotides of a gene are changed by mutation, this is called a point mutation. A point mutation can add one additional nucleotide to the wild type gene or may delete or substitute a nucleotide from it. For example, if a wild type gene sequence is "ATATATATA", then the addition of "C" at the position 4 will change it into "ATACTATATA". This addition of new nucleotide is called point mutation since only one nucleotide is added to the gene. Point mutations can cause serious genetic disorders such as sickle cell anemia.

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3 years ago
What are the pili used for?
rusak2 [61]

Answer:

Pili are short, hair-like structures on the cell surface of prokaryotic cells. They can have a role in movement, but are more often involved in adherence to surfaces, which facilitates infection, and is a key virulence characteristic

Explanation:

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4 0
3 years ago
he burning of coal, a fossil fuel, produces water and carbon dioxide. How is this similar to cellular respiration? A) Both requi
MariettaO [177]
Hello There!

Now, i'm not 100% sure on this but i think it is C. 

Please let me know if it is correct..i'm sorry if it is wrong.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
8 0
3 years ago
Read 2 more answers
Although the exact number of genes in human DNA is unknown, scientists estimate the number to be around 20,000 to 25,000.
Mazyrski [523]
C, you have genes/allels that you got from your parents, but the combination of all your genes together is unique.
3 0
3 years ago
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