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39 Science Vocab. Words Crossword

Across
Rain, snow, sleet, or hail that falls from the sky.
The process of evaporation, condensation, and precipitation that recycles our water supply.
The nonliving parts of an ecosystem.
An interaction in which one organism hunts and kills another for food.
Nitrogen moves from the air to the soil, into living things, and back into the air.
A series of events in which one organism eats another and obtains energy.
The producers use the carbon from the carbon dioxide they take in to produce other carbon containing molecules. They give off oxygen which the consumers take in.
All the members of one species in a particular area.
An animal that a predator feeds upon.
The process of changing free nitrogen gas into a usable form of nitrogen.
The living part of a ecosystem.
A close relationship between two species that benefits at least one species.
Down
The study of how living things interact with each other and their environment.
An environmental factor that prevents a population from increasing.
It involves one organism living on or inside another organism and harming it. A parasite lives on or inside a host.
A gas to a liquid.
A scientist who studies ecology
The largest population that an environment can support.
The number of individuals in a specific area.
A relationship in which one species benefits and the other species is neither helped nor harmed.
An animal that eats only plants.
Evaporation of water from the leaves of a plant.
A diagram that shows the amount of energy that moves from one feeding level to another in a food chain.
An organism that obtains energy by feeding on other organisms.
An organism that obtains energy by feeding on other organisms.
An organism's particular role, or how it makes its living. A niche includes the activities and behaviors that help it satisfy the need for food, water, living space, and reproduction.