Changes are taking place in the environment and in reproductive ability.

The individuals of a species differ in reproductive ability.

Suckling after two years may serve to maintain growth rate, body condition and reproductive ability.

The principal biological streamlining is their complete lack of reproductive ability.

Body shape has come to imply not only sexual/reproductive ability, but wellness and fitness.

"I always regarded learning to regulate the reproductive ability merely as an interesting exercise.

Achieving reproductive ability early and having large litters provides a biological balance to this.

The rabbit's reproductive abilities were the inspiration for the phrase "breeding like rabbits".

Studies suggest females produce cloacal pheromones to indicate reproductive ability.

What they didn't realize was the remarkable reproductive abilities it would have, with one single plant producing 65,000 plants in a single season.

They have lost their reproductive ability during the process and therefore cannot even be reliably duplicated through genetic alteration.

The impact of poaching is particularly serious in light of the panda's poor reproductive abilities.

For the same reason, the loss of an adult can be traumatic for the reproductive abilities of a population.

Within populations animals differ in their success in leaving offspring; they show differential reproductive ability.

In general, the clutch size is 5 eggs but it can vary according to snowfalls, the parents' reproductive ability and predation.

It will be hard to drive the cassette business down to zero, though, because of its reproductive ability, and its affordability."

These are events that signal a loss of reproductive ability or potential, or that did so in humans' ancestral environment.

Dominant males use scent marking to show their social status and may suppress the reproductive abilities of the other males.

Abbott argued that HIV created a "substantial limitation" to life activities, specifically, reproductive ability.

Menopause, however, is a complete cessation of reproductive ability caused by the shutting down of the female reproductive system.

Because they lose their reproductive abilities, the only means of creating new Type-V mutants is to infect more humans.

The prodigious reproductive ability of the imported birds helped them reach San Francisco by 1875, although Utah was still sparrow-free.

Accordingly, he set about developing tests of the two components of g identified by Spearman - namely eductive (meaning making) and reproductive ability.

It's able to interfere with genetic processes, reproductive abilities and metabolic functions, making it useful in a limited way, and dangerous in a complete one.