Ecosystems Lessons 1-4

"stuff" that weighs something and takes up space.

• structures

• matter

• claim

• model

Answer explanation

physical body parts that make up organisms

• aquatic

• evidence

• structures

• transfer

Answer explanation

a statement that answers a question and can be backed up with evidence

• fair test

• carbon dioxide

• model

• claim

Answer explanation

data or facts that back up or support a claim

• evidence

• claim

• particles

• transfer

Answer explanation

an investigation where one thing changes and everything else stays the same

• fair test

• transfer

• argument

• aquatic

Answer explanation

living under water

• terrestrial

• minerals

• aquatic

• gas

living on land

• terrestrial
• aquatic

• model

• transfer

one of the three states of matter

• solid

• liquid

• gas

the gas that we exhale and that plants take in

• particles

• gas

• carbon dioxide (CO2)

• minerals

what is a tool used by scientists and engineers that represents the real thing and helps make explanations and predictions?

• argument

• particles

• model

• claim