Science crossword puzzle

A biological community of interacting organisms and their physical environment
The natural home or environment of an animal, plant, or other organism
A group of organisms or populations living and interacting with one another in a particular environment
A job that an organism has in its ecosystem
An organism that can make its own food
An organism that feeds on other organisms
An organism that decomposes dead organisms
A ecosystem which is filled with grass
It shows how each living thing gets food, and how nutrients and energy are passed from creature to creature
It is like a cricket eats grass and a frog eats the cricket and then a snake eats the frog and a eagle eats the snake
A creature that eats plants
A creature that eats meat
A creature that eats plants and other animals
The number of the same organisms living in an ecosystem
The process of which plants make their own food
The gas that is released by organisms and machines
The gas in which organisms breath in to their bodies
It is a large region of Earth that has a certain climate and certain types of living things
It is also known as coniferous or boreal forest, is the largest terrestrial biome on earth
A dry piece of land
It is a forest that have trees that shed their leaves every year
A forest that has a lot of rainfalls every year
A treeless region having a permanently frozen layer below the surface of the soil