ACT 8

 refers to the loss of individuals in a population

Two types of mortality that can be  recognized

 refers to the death of individuals under ideal or non-limiting  environment conditions and the individuals reach their physiological longevity.

 death of individuals under existing or actual environmental conditions.

An age-specific summary of the survival pattern of a population.

It is constructed to show the mortality and survival data of a population or cohort

a group of individuals of the same age, at different times during their lifetime.

follow the survival and reproduction of all members of a cohort from birth to death.

it follows same-aged individuals from birth (or fertilized eggs) throughout their lives

-They belong to one generation

-Same Birth year

-Time consuming

-Use short lived animals

a group of individuals of the same species born at approximately the same time