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Alja [10]
3 years ago
15

Which organisms convert nitrogen into a form that is usable by humans?

Biology
1 answer:
valina [46]3 years ago
7 0
The possibility to answer is C.
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Which bonds could a single carbon atom have
nadya68 [22]

Answer:Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. Carbon can form single, double, or triple covalent bonds with other carbon atoms.

Explanation:

5 0
3 years ago
Dr. Brooke studies plants to learn about ecosystems. What is Dr. Brooke's specialty?
wariber [46]

Answer:

Ecologist

Explanation:

"Ecologists study the interrelationships between organisms and their environments." (Environmentalscience.org)

3 0
3 years ago
And comparing a desert to on Mars which statement is not true
maksim [4K]

You didnt exactly put in any answer options...

But here is my answer: Comparing a desert to Mars, i would say that

A desert has oxygen

And mars has carbon dioxide

A desert has sand

Mars has a rocky surface

Mars is a planet

A desert is not

The things i could think of that a desert and planet mars can relate to...I would say they both have heat and both sometimes have dust storms.

8 0
3 years ago
What do you think is meant by the statement “the human digestive system is very efficient at squeezing everything it can out of
Mkey [24]

I think the statement “the human digestive system is very efficient at squeezing everything it can out of any food?" refers to the way the stomach is good at absorbing the wanted nutrients and keeping them in the body, while disposing of the unwanted waste and toxins. The biomolecules are broken down to preserve only certain nutrients within the molecules.

6 0
3 years ago
Read 2 more answers
F an adult dog has 78 chromosomes, the number of chromosomes in a dog’s sperm cell will be
telo118 [61]
There's 39 chromosomes in the sperm cell. Why? Because sperm cells are gametes and therefore they are haploid cells meaning they have half the number of chromosomes of a regular cell or diploid cell.

78 / 2 = 39
6 0
3 years ago
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