Nucleotides are the basic unit of which macromolecules?

Nucleic acid

Explanation:

Nucleotides are the basic unit of Nucleic acid

A nucleotide consists of three groups –  

a)5-carbon sugar (ribose or deoxyribose)

b)a nitrogen-rich base   - There are four nitrogen rich base namely cytosine (C), guanine (G), adenine (A), thymine (T)

c)and a phosphate group

The nucleotides are the repeating units of a nucleic acid and  therefore a nucleic acid can be considered as polymer while a nucleotide becomes its monomer unit.

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

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