You are tasked with identifying several rock samples. You are stumped by this sample. Your teacher has given you a hint. She tells you that it contains iron. You can now narrow your choices. But, you want to know if the rock contains hematite or magnetite. Design a strategy to test what mineral is present.

A) Test to determine the hardness of the two samples; observe the colors.

B) Observe the shape of the crystals; observe the streak color from a streak test.

C) Observe the colors; do a streak test; see which sample is attracted to a magnet.

D) Observe the shape; determine the hardness of the two samples; observe the colors.

I am prety sure C

Explanation:

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humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

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