Section 1-1
2. Organisms obtain the food, water, and other resources they need to live and grow from their environment.
3. Living things do not simply exist in their environment, they constantly interact with their environment and change in response to the conditions of their environment.
4. Not only do organisms change in response to their environment, living things also change in their environment.
5. All of the living and nonliving things in an environemnt are interconnected just like a spider web. If one thread is disturbed, then all of the other threads are disturbed.
The entire web is weakened.
6. Ecology is the study of the relationships and interactions of living things with one another and with their environment.
Ecosystems
1. Earth's living things and their environment divide the world up into seperate units known as ecosystems.
2. An ecosystem consists of all the living and nonliving things in a given area that interact with one another.
3. The size of an ecosystem is defined by the ecologist who is studying it.
4. Ecosystems are not isolated - they overlap and affect one another.
Communities:
1. The living part of an ecosystem is called a community.
2. Members of a community interact with one another in many different ways.
Populations:
1. Each kind of living thing makes up a population in a community.
2. A population is a group of organisms of the same type, or species, living together in the same area.
Habitats:
1. The place in which an organism lives is called a habitat.
2. A habitat provides food, water, shelter, and other resources an organism needs to survive.
3. The size of an organism's habitat depends on the organism's habits and needs.
End of section 1-1 Notes
