Biology, 24.10.2019 03:00 Jasten

Why is coal not classified as a mineral?
o it is made of organic material.
o
it is not a solid.
0
it is does not occur naturally.
it has no crystal shape.
next >

Answers: 2

Show answers

Answers

Answer from: kevin733

It is made of organic material.

Explanation:

Coal is not classified as a mineral because it is made up of organic material.

It is source of many organic materials. It is fossil fuel and form after long period decay of plants. It is formed when trees are buried under earth about 500 million years ago. The chemical and bacterial reactions take place and plant wood converted into the peat.

Than because of high temperature and pressure inside the earth peat is converted into the coal.

Through other processes it is than used to make the fuels such as coke. coal tar and coal gas.

Coal tar is the source of many organic compounds which are separated through fractional distillation.

About 80% of coal in Pakistan is used to bake the bricks and also used in lime kilns and for domestic purpose.

Answer from: Quest

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar flies (drosophila). one sample revealed an anomaly: a white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs) produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.

Answer from: Quest

plants absorb water from the soil by osmosis. root hair cells are adapted for this by having a large surface area to speed up osmosis. the absorbed water is transported through the roots to the rest of the plant where it is used for different purposes: it transports dissolved minerals around the plant.

Another question on Biology

Biology, 21.06.2019 16:30

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Answers: 2

Answer

Biology, 21.06.2019 16:30

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

Answers: 1

Answer

Biology, 21.06.2019 23:30

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Answers: 3

Answer

Biology, 22.06.2019 09:00

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Answers: 3

Answer

You know the right answer?

Why is coal not classified as a mineral?
o it is made of organic material.
o
it is n...