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Ecosystems, Pond Ecology and Greenhouse

Across
A scientist that studies the relationship between organisms and the environment where they live.
A nature neighborhood
Something that traps the heat energy of the sun
The stage of complex insect metamorphosis between larva and adult.
The body system that has to do with the heart and circulation of blood.
The air surrounding the planet
An organism that harms it's host by feeding off of it.
A way to describe temperature, written as C
Things that are alive or were alive
Scientific name for bug.
Down
Someone who studies ponds
Larva of some simple insects
A pupa of a moth or butterfly enclosed in a firm case or cocoon.
The middle segment of an insect's body.
Things in an ecosystem that aren't alive and never will be.
Defining land communities based on altitude.
A shallow body of water, that plants grow across.
Organism made up of algae and fungus growing together.