| A | B |
|---|
| ecology | the study of living things and their interaction with each other and the environment |
| habitat | the place where a population lives |
| ecosystem | all the living and nonliving things make up an ________ |
| community | all the living organisms make up a __________ |
| Living organisms in a habitat are called _________________. | biotic factors |
| biodiversity | the number of living things living within an ecosystem indicates its _________ |
| lichens | associations between fungi and algae or cyanobacteria |
| pioneer species | the first organisms to grow or live in an area |
| succession | the regular progression of species replacement |
| ________ succession is where plants have never grown before. | primary |
| _________succession is where there has been previous growth. | secondary |
| A _________ is a good example of a primary succession. | glacier |
| How much have the glaciers receded in the past 200 years? | 100 KM |
| What are some pioneer species of the glacier? | lichens, mosses, grasses, firweed |
| What are two tree species that inhabit the stable glacier community? | spruce, hemlock |
