Ecology Vocabulary Crossword

Total dry mass of all organisms in a given area.
Relationship in which two species live closely together.
Collection of Earth's water bodies, ice and water vapor.
Physical, or nonliving, factor that shapes an ecosystem.
Group of ecosystems that have the same climate and dominant communities.
Symbiotic relationship in which both species benefit from the relationship.
Step in a food chain or web.
Air blanketing Earth's solid surface.
Collection of all of the different populations that live in one area.
Resource that can regenerate quickly and that is replaceable.
Resource that cannot be replenished by natural processes.
Biological influence on organisms within an ecosystem.
Ecological relationship in which one organism benefits by harming another organism.
Organism that is the first to live in a previously uninhabited area.
Ecological relationship in which two organisms attempt to obtain the same resource.