Programs like these vary in size and their ability to adequately reach large populations.

Like anywhere else, the candidates varied widely in their ability to work the medium, she said.

These offspring vary in their ability to survive and reproduce.

Short of that, there is protective clothing, although fabrics vary in their ability to screen out the sun.

Coral species vary in their ability to cope with sediment.

Organisms vary in their ability to synthesize the 20 common amino acids.

Experts on both sides of the debate agree that schools vary radically in their ability to translate dollars into better educated students.

Partners will vary in their ability and willingness to commit time to partnership activities.

Amino acids vary in their ability to form the various secondary structure elements.

Different individuals of a species, like crows, vary in their ability to use a complex tool.