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Science Vocabulary Review

Across
A ______ is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
Human waste that is carried away from buildings through a system of pipes.
______ is a kind of living organism: yeasts, moulds and mushrooms are types of________.
An animal that breaks down dead organisms and gives nutrients to the soil.
An organism that makes its own food.
A water treatment plant is called a ____________.
A large tank in a sewage treatment plant where microorganisms break down solid waste.
Animals that can't make their own food so they eat plants or other animals.
An animal that only needs to feed on plants to survive.
__________ are microscopic single-celled organisms that thrive in diverse environments. They can live within soil, in the ocean and inside the human gut.
Down
In any ecosystem there are many food chains and, generally, most plants and animals are part of several chains. When you draw all the chains together you end up with a ____________..
An animal that eats other animals to survive.
An animal that feeds on both plants and animals.
An animal that feeds on dead organisms.
Special decomposers used in composting.
Animals that hunt, or prey on, other animals.
A colourless, oderless and tasteless gas used as fuel to provide energy for homes and industries. Rotting vegetable can produce ______________.
An animal that is hunted and killed by another for food.