The variation of organisms within a species increases the likelihood that at least some members of the species will survive under changed environmental conditions.
Learning Goal 1b
A great diversity of species increases the chance that at least some living things will survive in the face of large changes in the environment.
Interdependence of Life
For Grades: 9-12
Learning Goal 1
Ecosystems can be reasonably stable over hundreds or thousands of years. As any population grows, its size is limited by one or more environmental factors: availability of food, availability of nesting sites, or number of predators.
Learning Goal 3
Human beings are part of the earth's ecosystems. Human activities can, deliberately or inadvertently, alter the equilibrium in ecosystems.