General Science Questions

The presence of vitamin D in the body enhances the absorption of calcium by the intestine.

True, the given statement that the atmosphere is unaffected by changes in the geosphere.

An ideal habitat with unlimited resources is associated with Exponential growth.

True, the carbon in the ocean originates from the atmosphere. The oceanic surface water absorbs the carbon dioxide gas from the atmosphere and dissolves in it.

A Disease which spreads by contact are Contagious.

Infectious diseases : These are caused by microscopic germs such as bacteria or viruses that get into the body and cause problems. Some but not all infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious. Some infections spread to people from an animal or insect, but are not contagious from another human. 

Contagious diseases such as the flu, colds, or strep throat spread from person to person in several ways. One way is through direct physical contact, like touching or kissing a person who has the infection. Another way is when an infectious microbe travels through the air after someone nearby sneezes or coughs.

Fatal Diseases : Diseases leading to failure or disaster.

Incurable Diseases : Diseases of a sick person not able to be cured.

Secondhand smoke is very dangerous and creates serious health risks to you and your family members. 

DNA fingerprinting is used to identify the parents, thieves and rapists.

The distance between two genes is measured with a unit called map unit. One map unit is equivalent to 1% recombination frequency.