The nails are left in the liquids until a change is observed. Solution levels in each beaker are kept constant. Which is the dependent variable in this investigation?

Question

Responses

the nails

the nails

the types of water

the types of water

the amount of rust

the amount of rust

the different containers

Answer 1

the amount of rust

Answer 2

Which aquatic environment supports the least number of species?

Responses

Fresh water

Fresh water

Brackish water

Brackish water

Seawater

Seawater

Salt lakes

Answer 3

Salt lakes

Answer 4

Based on the graph, approximately how many calories did the student consume in bread and pasta?

Responses

50

50

500

500

750

750

1500

1500

Answer 5

750