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AysviL [449]
2 years ago
14

This is about environmental systems ​

Biology
1 answer:
zlopas [31]2 years ago
4 0

Answer:

A. A weak or strong current

Explanation:

D. is inccorect because rivers are always freshwater

C. is incorrect because seawater is salt water

B. is incorrect because rivers have waterflow.

Mark me brainliest and have a great day!

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Mutation comes from the Latin word mutare,
aalyn [17]

Answer: Mutation can affect an organism by resulting to a change in the number and structure of chromosomes (chromosomal mutation). A typical example of this type of mutation is Down's syndrome where the individual contains 47 instead of 46 chromosomes.

Mutation can also result to a change in the nucleotide sequence of the DNA molecule in a particular region of a chromosome(Gene mutation) an example of genetic mutation is sickle cell anemia

Explanation:

6 0
3 years ago
8) This is the purpose for which something exists.
Misha Larkins [42]

Answer:

the reason for which something exists or is done, made, used.

8 0
2 years ago
A. Reactants: glucose products: oxygen
kifflom [539]

Answer:

I believe the correct answer is option <u>C. Reactants: carbon dioxide and water products: oxygen and glucose.</u>

Explanation:

I'm pretty positive that the two main reactants are carbon dioxide and water, while the products are oxygen and glucose. Carbon dioxide and water + sunlight are the reactants which are present at the start of the reaction <u>6co2+6h2o c6h12o6+6o2.</u>

Hope I could help!

8 0
3 years ago
Think about the DNA coding sequence of a gene. If an A were swapped for a T, what kind of mutation could it cause and why?
sleet_krkn [62]

Answer:

The answer is D.

Explanation:

The given situation in the question where an Adenine nucleotide is swapped for a Thymine nucleotide, which as stated are complimentary of each other just like guanine and cytosine, can cause all three types of mutations, frameshift nonsense, frameshift missense and silent because the situation is not specific to either of them. There is no information whether the change resulted in a change in the amino acid structures or not. In this case the best answer is D.

I hope this answer helps.

7 0
3 years ago
Please help ASAP this needs to be turned in at 4:30 pm
dangina [55]

Answer:

Explanation:

1.A.

2.C.

3. D

hope this helps

8 0
3 years ago
Read 2 more answers
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