Scientists test for the hardness of a mineral by doing which of the following? Measuring the mass Observing how light
of the mineral, and reflects off the
comparing it mineral and how
against other the mineral looks as
minerals
a result
Scratching the
mineral against
other substances of
known hardness
Observing the colo
of a mineral and
comparing it
against other
minerals

Impressions of tropical swamp plants were observed on rocks in polar regions. the impressions were dark black imprints, which means the fossils are examples of ( 1 ) the fossils tell us that polar regions ( 2 ) ( 1 ) a. carbonization b. mineralization c. trace fossils ( 2 ) a. had tropical plants that can grow in ice b. might have had a diffierent climate in the past c. will have abundent vegitation

What type of damages can you cause while driving

As water is cooled from 4 c to 0 c its density