18) Water availability poses the single greatest limitation to plant life in deserts. The amount of moisture that is available for plants to use is determined by the unique features of the soil. Which term describes the capacity of the soil to allow fluids to pass through it?

A) texture

B) composition

C) particle size

D) permeability

human-caused climate hope this

genetic variation will increase because of a new habitat and food source.

explanation:

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.