Grade 9 Revision 2

A government in which people vote to make their own rules and laws.

A government in which people vote for a small group of citizens who make their rules and laws.

Ancient Rome used this type of democracy

Olympics started in Ancient Rome

Ancient Greece organized itself into what was know as

Greek Democracy was called

Ancient Rome had three branches of government, what are they?

All of the following are living things except..

What makes up ecosystems?

Which of the following are necessary in order for an animal to survive? (Select all that apply.)

Which of the following is an abiotic part of the ecosystem?

There are two types of ecosystems, one is called terrestrial. What is the name of the other type of ecosystem?

Why are decomposers important in an ecosystem?

The sun is the main source of energy for all of life on earth.

Humans change their ecosystem all the time. Most of these changes are harmful. How can we stop harming our environment?

What is an aquatic ecosystem?

What is the name of the body part that helps an organism to survive?

Which of the following are necessary in order for an animal to survive?

Plants use the sun's energy to make their own food, what is this called?

Humans are a major cause of endangered species.

Invasive species can have a negative impact on the environment.

A food chain is a cycle of how energy is transferred.

Is a fish tank an ecosystem?

Which is better?