ecology part 1 Crossword

study of the interactions among living things and their surroundings
collection of all of the different populations that live in an area
collection of organisms and nonliving things, such as climate, soil, water and rocks, in an area
A large region characterized by a specific type of climate and certain types of plant and animal communities
A term that describes a living or once‐living organism in an ecosystem.
A term that describes a nonliving factor in an ecosystem
Number of different species in an area
A species that has an unusually large effect on its ecosystem
An organism that can make its own food.
Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
Each step in a food chain or food web
an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide
A measure of the total dry mass of organisms within a particular region
A diagram that shows the amount of energy that moves from one feeding level to another in a food web
An organism that obtains organic food molecules by eating other organisms or substances derived from them.
An organism that obtains energy by feeding on other organisms
Place where an organism lives
Sum total of a species' use of the biotic and abiotic resources.