Road salt, the mineral halite, is sometimes used to melt snow and ice. A scientist sets up an experiment to test how road salt affects the growth of nearby grass. What is the dependent variable?

Color filters only allow certain colors to transmit through them. Which color would not be blocked from coming through a green filter?

.......... is an adaption that allows an organism to blend into its environment

Precambrian time began with the........

earth's........is made mostly of iron and nickel

A paleontologist discovers a layer of sedimentary rock filled with fossils of known and unknown species. He collects some of the fossils of the unknown species for further analysis. Which would improve his analysis?

as a safety measure, aprons and ____ should be used during most investigations.

if a fossil dissolves away, it can leave behind a cavity in the rock called a......

at the beginning of the Mesozoic era, all continents on earth existed as a single landmass called.......

scientists have inferred that earth's magnetic field is caused by.........

A biologist grows a plant inside sealed glass jar. The plant keeps growing but then dies. At the start of the experiment, the jar had a mass of 3 kg. At the end of the experiment, it still had a mass of 3 kg. Which explains why the mass stayed the same

Which is the correct procedure to follow if you accidentally spill a chemical solution on your skin during a lab?

During the last........., so much water was frozen that the sea level may have been 100m lower than it is today

if a fossil is found in multiple rock layers, then it does not qualify as......

the point on earths surface located directly above the..............is the epicenter

based on recent findings, some scientists now believe that life may have once existed on Mars. to continue this research, which question should be studied next?

If your clothes catch of fire in the lab, you should ______.

eras of the geological time scale are divided into,

which type f rock do scientists study to determine the relative age of a rock layer

according to the rock cycle, a sedimentary rock can change into.........

A well known drug company is advertising a new drug. The commercial mentions that the drug has undergone several rounds of testing and has been found to be safe and effective. Which is the best reason the drug is safe

Your investigation calls for you to test for mineral hardness using various sharp objects. You should _______?

the dominant life form during the Mesozoic era was?

............, are organisms that may become extinct within a short period of time

a mineral is only classified as an ore as long as...........