What physical characteristics of an environment would support populations and communities within a desert ecosystem?

General Characteristics of the Desert:

Aridity: It is one and common characteristic of all deserts throughout most or all of the year. ...

Extremes of temperature: ...

Humidity: ...

Precipitation: ...

Drought: ...

High wind velocity.

Sparsity of cloud cover.

Absence of water vapour in air.

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.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products