Answer: D. Sedimentary
Explanation:
Sedimentary rocks are formed overtime are different particles of sand, shells, pebbles and other fragments of materials form layers and harden into rock.
All of the statements are true.
The X chromosome is one of the two sex chromosomes of humans and some animals (the other sex chromosome is the Y chromosome). Men have a single X chromosome and women two X chromosomes.
Diseases whose gene is localized on the X chromosome are most often transmitted in the X-linked recessive mode; some are transmitted on the dominant mode related to the X.
In this mode of inheritance, the morbid allele behaves like a recessive trait.
Women heterozygotes are not affected but can transmit the disease; they are said to be conductive of the disease.
The disease is only manifested in male subjects (XY) with only one copy of the gene (hemizygous subjects)
Answer:
B) Ethanol.
Explanation:
A type of fuel made from corn or sugar (but primarily from corn) is ethanol. ethanol is typically blended into gasoline, though it is available as a stand alone. It is also used for many things, including but not limited too gasoline, chemicals, and alcoholic beverages.
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Answer: Fourth option is correct.
Explanation:
Germ theory of disease stated that Diseases are caused by the presence and action of specific microorganisms inside the body.
It says that the pathogens are responsible for causing diseases.
These pathogens are too small to see without the use of microscope attacks human, animals and other hosts.
That pathogens caused infection due to which diseases occur in the body.
Hence, Fourth option is correct.
