All of the following are examples of density-dependent limiting factors except

a. competition.
b. predators.
c. overcrowding.
d. hurricanes.

The correct answer is d

Explanation:

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Competition is an interaction between living beings, so it depends on population density.

Predation is a biological interaction in which one hunts and the other is the prey, so if it depends on density.

Overcrowding refers to the crowding of individuals, so it depends on population density.

Hurricanes are cyclones so it is a natural phenomenon and does not depend on density.

The correct answer is d

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.