Vocabulary
What does traces mean in the following sentence? They found traces of metal in the water.
small amounts
What is the main idea of the article?
There are many types of animals that live in the sea.
The ozone layer protects us from the sun.
We should protect all of Earth's ecosystems.
What is the section "An Ocean of Animals" mainly about?
Animals that live in or near the sea
What does the word banned mean in the following sentence? Smoking is banned on school property.
Not allowed
What does it mean to have a delicate balance when dealing with the environment?
To use some natural resources, but not all of them.
Why is the ozone layer important?
It protects us from the sun.
What does the word species mean in the following sentence? We learned about the different species of dogs.
Kinds
Which is an example of an ecosystem?
Oxygen
Scientist
Lake
Lake
What is one way to protect the ozone layer?
Ban some chemicals
What does the word vast mean in the sentence below? At school, we collected a vast amount of food for the food drive.
large
What does the rain forest provide to people and animals?
Oxygen and Food
What is one way to protect the environment?
Put trash where it belongs, turn off lights and water when not in use
What does the word variety mean in the following sentence? She used a variety of colors in her painting.
different kinds
Why should fishing be banned in certain areas?
Some fish are in danger of dying out.
Why did rain forests disappear from several continents?
Trees were cut down, so soil was washed away, so the remaining trees could not grow.