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lana66690 [7]
3 years ago
10

Estuaries are very productive ecosystems because they receive nutrients from rivers and oceans.

Biology
1 answer:
11111nata11111 [884]3 years ago
5 0
It`s true.....................

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What are the components of a water molecule?
Maslowich

The chemistry shorthand for water is  H₂O  .

Right there, it's telling you that a molecule of water is the combination of two Hydrogen atoms bound to one Oxygen atom.

6 0
3 years ago
If you extract the DNA of the coliphage φ X174, you willfind that its composition is 25 percent A, 33 percent T,24 percent G, an
kifflom [539]

Answer:

This composition of nucleotide given in the question do not obey the chargaff"s rule.

Explanation:

According to chargaff"s rule the total number of purine bases will be same to the total number of pyrimidine bases that is

         Adenine+Guanine=Thymine+Cytosine

But here the above quation is not maintained because according to the question A+G=49%

        and T+C = 51%.

Such DNA is replicated by rolling circle model.

5 0
3 years ago
In perspective, with Earth being 4,500,000,000 years old and humans being around 1,400,000 years; how long out of a 24 day time
fiasKO [112]

Answer:

Day time period have we as humans been here: 26 seconds

Explanation:

4,500,000,000 years = 1 day

1,400,000 years = X

X = 0.0003111  

1 day = 86,400 seconds

0.0003111 = X

X = 26 seconds

In term of the Earth in 24-hour clock, <em>Homo sapiens</em> appeared on our planet only in the last 26 seconds, it means that in geologic time, humans have existed for only a brief time period and thereby it is a relatively new species.

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3 years ago
In flowering plants pollen grains from the flowers male parts called​
Allisa [31]

These are called stamens, the male part of a flower that produces the pollen.

Have a good day.

8 0
3 years ago
Explain the functions of the muscular system to a child
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The main function of muscular system is movement, but also stabilization

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3 years ago
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