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KonstantinChe [14]
3 years ago
6

Which of the following conditions is necessary for a species to survive?

Biology
1 answer:
Burka [1]3 years ago
4 0

Answer:

the correct answer is A

Explanation:

hope it helps

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In the polyatomic ion tco4-, tc has a hypothetical charge of 7+. the 99tc isotope is used in medicine for imaging purposes. it h
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Atomic number Tc = 43 , which is equivalent to the number of protons in nucleus.

Number neutrons = mass number - number of protons = 99 - 43 = 56 neutrons .

Number of electrons = number of protons - charge = 43 - (+7) = 36 electrons

Explanation;

-Atomic number is the number of proton in the nucleus of an atom of a given element. Mass number is the total number of protons and neutrons in the nucleus of an atom. A neutral atom has equal number of protons and neutrons.

-Isotopes are atoms of the same element with the same atomic number but different mass number.

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What is the maximum number of alleles that a given human adult (with 23 pairs of chromosomes) can have at any particular genetic
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Answer:

b. 2

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