5 Factors

Your natural fate is decided from birth

Nature actively chooses who surivives

Those best suited to demands of environment surivie

The weakest of a species survive

The origin of species

Origin of species

On the origin of species

Species. The origin

Populations can survive in different locations on earth

Environmental conditions limit the number of species on Earth

Populations grow when resources are abundant

The traits of a species can change over time

mutations

adaptations

a desire to change

injuries

increases, decreases

increases, increases

decreases, increases

decreases, decreases

Available food resources

Population of the species

Annual snowfall

Overall size of the habitat

Brown bears hibernate during the winter while hawks remain active.

Pesticides in the fish population affect hawks’ eggs and decrease their population.

Both brown bears and hawks feed on the same species of fish.

Both Shanna and Savanna feed on the same species of snakes.

increase in precipitation

the presence of decomposers

the introduction of a new food source

limited supply of resources