A species which has a disproportionately large effect on its natural environment relative to its abundance
What is a keystone species
What could happen if an animal that is important to the food chain died off
What is the food chain collapses
The continued existence of organisms which are best adapted to their environment
What is survival of the fittest
Process through which populations of living organisms adapt and change
What is natural selection
Why a beaver is a keystone species in its ecosystem
What is building dams
Human impacts of the environment that can affect the ecosystem and animals in it
What is pollution and oil spills ect.
An advantage for giraffes
What is a long neck
4 conditions needed for natural selection
What is reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population
An advantage for blind fish
What is no eye tissue (cant be damages if they run into anything)