1.which of the following is a physical or chemical characteristic of a mineral? (2 points)

minerals are organic.

minerals have a crystal structure.

minerals may be solid, liquid, or gas.

minerals consist of a varied arrangement of elements.

2.which of the following is a common manufacturing use of a mineral? (2 points)

using iron to fortify cereals

using copper to patch a leaking pipe

using tantalum to produce cell phones

using limestone on crop fields to neutralize acidic soils

3.which tool would a geologist use to test a mineral's resistance to scratching? (2 points)

hammer

hardness points

specific gravity apparatus

streak plate

4.which mineral test was used if a geologist refers to a mineral as metallic? (2 points)

streak

hardness

luster

magnetism

not sure what u question is

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

it would lead to upper respiratory infections and pneumonia.