Food, air, water, and sunlight are all examples of this.
Resources
100
Name 1 way that planting a tree can help the environment.
Any of the following:
-Create more oxygen
-Provide homes for animals
-Keep soil from washing or blowing away
100
When dry land suddenly becomes covered with water, this has occurred.
Flood
100
What do scientists study to learn about living things of the past?
Fossils
100
Which of the 3 R's means to use LESS of something?
Reduce
200
When there are only a few of a kind of organism left, we say the organism is this.
Endangered
200
Name the "3 R's" that people can do to help the environment.
-Reduce
-Reuse
-Recycle
200
This is the opposite of a flood.
Drought
200
What do most scientists believe happened that caused dinosaurs to become extinct?
Most scientists believe a meteor hit Earth, killing all of the dinosaurs.
200
What might a fossilized flat tooth tell scientists about the animal it came from?
It was probably a plant eater.
300
This happens when harmful materials get into the land, air, or water.
Pollution
300
How do people create competition in an environment?
They may bring new plants or animals to an environment, and they start taking the resources.
300
Name 2 ways that organisms might respond to a change in their environment.
Any of the following:
-They move.
-They adjust to survive.
-They have adaptations to help them survive.
-If they can't do any of the above, they might die.
300
What caused the saber-toothed cat to become extinct?
The temperature rose and ice began to melt, which caused the saber-toothed cat's food source to die off.
300
According to some scientists, about how many species become extinct each day?
100
400
The struggle among living things to get resources and survive is this.
Competition
400
How do bacteria, worms, and fungi change their environment?
They break down leaves and dead animals, returning nutrients to the soil.
400
What is the difference between a population and a community in an ecosystem?
A population is all of the members of just one kind of animal.
A community is all of the populations in an ecosystem.
400
Name 3 things that a fossil can tell us about an organism.
Any of the following:
-Size/shape
-Diet
-How the animal moved
-How Earth changed
-How long ago the organism lived
400
What do plants and animals have that help them survive in their environments?
Adaptations
500
All of the populations in an ecosystem make up this.
Community
500
What causes more changes to the environment than anything else?
People
500
Why are Saharan cypress trees endangered?
They are adapted for a wet climate but their environment has become hot and dry and they cannot adjust.
500
Why did the St. Helena Olive tree of Africa become extinct in 2004?
Dry weather and disease
500
What modern day animal is the woolly mammoth most similar to?