Vocabulary 1
Vocabulary 2
Cycles
Food Chains/Webs/Pyramids
Changes in Ecosystems
100
The living and nonliving things in an area is called a
What is an Ecosystem
100
A relationship between two organisms that lasts over time is called
What is symbiosis
100
This gas must be fixed into the our soil to be effective.
What is Nitrogen
100
A model of a path that energy in food takes as it moves....
What is food chain
100
A condition that controls the size and growth of a population is called......
What is Limiting factors
200
All organisms living in a a particular area.
What is Population
200
The attempt by organisms to obtain a resource that is available in a limited supply.
What is Competition
200
About 78% of the atmosphere is made up of this gas.
What is Nitrogen
200
This is a model of how food chains overlap in an ecosystem.
What is food web
200
A species is ___________ if its numbers have declined to low levels and may become endangered.
What is Threatened
300
All the populations that live together make up a
What is Community
300
Each species has a different ___________ or role in the community.
What is Niche
300
When you breathe in you take in____________ and when you breathe out you release __________ ___________.
What is Oxygen/Carbon-Dioxide
300
A model of how energy flows through a food chain.
What is Energy Pyramid
300
A species is __________ if it no longer exists in the wild.
What is Extinct
400
Living things in an ecosystem are called Biotic/Abiotic?
What is Biotic
400
A ________________is an organism that breaks down the remains of dead organisms.
What is Decomposer
400
All living things need this cycle to survive daily.
What is Water cycle
400
These organisms form the base of the energy pyramid.
What is Producers
400
A species is ____________ when its numbers have been so reduced that the species is in danger of extinction.
What is Endangered
500
All the nonliving things in an ecosystem are called Biotic/Abiotic?
What is Abiotic
500
An organism that makes its own food.
What is Producer
500
This important gas makes up about 22% of the atmosphere.
What is Oxygen
500
Living things that hunt and kill other living things in a food chain are called.........
What is Predators
500
The gradual replacement of of one community by another is called......
What is Succession
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