Click on a mineral with known hardness. Move the sample minerals to the mineral to scratch it. Record your
observations in the Student Guide,
MINERAL SAMPLES
MINERALS WITH
KNOWN HARDNESS
Mineral 1
Mineral 2
Gypsum
Apatite
Mineral 3
Mineral 4
Fluorite
Calcite
Mineral 5
Mineral 6
Orthoclase

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

Plants transfer carbon in the carbon cycle a. through assimilation of carbon from the soil. b. when carbon transpires from their stomatae. c. when they are eaten by animals. d. through fixation of carbon in the soil.plants transfer carbon in the carbon cycle a. through assimilation of carbon from the soil. b. when carbon transpires from their stomatae. c. when they are eaten by animals. d. through fixation of carbon in the soil.