Ecosystems
Organisms
Food Chains
Animals
Change
100
What is a system where living and nonliving things interact?
an ecosystem
100
Grass can make its own food. What do we call that?
producer
100
What is the main source of energy for life on Earth?
the sun
100
What does endangered mean?
an organism's population is reduced and are almost extinct
100
What could cause an ecosystem to change quickly?
and earthquake
200
What is an example of a balanced ecosystem?
no animal or plant drives out the other animals or plants
200
What is an animal who eats both plants and animals?
omnivore
200
What travels through animals through the food chain?
nutrients and minerals
200
What does extinct mean?
an organism is no longer alive.
200
What might be the effect on an ecosystem of a climate change from rainy to dry?
plants and animals may change in that ecosystem
300
What would be the cause if there were a decrease in population of birds in a community?
the amount of food decreased
300
An organism, like an insect or fungi, that eat the remains of animals is called what?
decomposer
300
How do decaying organisms in a swamp help create the next generation of organisms?
they put minerals back into the soil
300
What impact does a parasite have in an ecosystem?
they help one organism (themselves), but hurt another one (their host)
300
How do we preserve nature's beauty and habitats of plants and animals?
establishing national parks
400
A meadow has too many rabbits. What would help balance this ecosystem?
there should be more foxes to eat the rabbits
400
Animals have to adapt to survive in their ecosystem. Which adaptation was useful for a bee in order for them to eat nectar from plants?
wings
400
What is a food web?
A food web is many food chains where the flow of energy branches in many directions.
400
What is a host?
The organism that is harmed by the parasite.
400
How can strip mines be repaired?
companies can replace the soil and plant grass and plants
500
How do humans disturb the balance of ecosystems?
We tear down trees to build houses.
500
What is the difference between a niche and a habitat?
A niche is an animal's "job". A habitat is the place it lives in and performs it's niche.
500
What is a food chain?
A food chain is energy flowing in one direction and it demonstrates how organisms transfer energy.
500
What is a parasite?
A parasite is an organism that feeds off another organism.
500
If a scienctist found a fish fossil in a desert, what can we predict?
the desert was once a sea or lake
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