Correct Answer : Sea
Correct Answer : 2400
Correct Answer : Johannson
Danish botanist Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity. He also made the distinction between the outward appearance of an individual (phenotype) and its genetic traits (genotype).
Correct Answer : The science of raising worms
Correct Answer : DNA
Correct Answer : Chlorine
The technique of purification of drinking water by use of compressed liquefied chlorine gas was developed by a British officer in the Indian Medical Service, Vincent B.
Correct Answer : less on 0.7 ppm
Correct Answer : Iron oxide
That are coated with fine particles of a magnetic substance, usually an oxide of iron, cobalt, or chromium.
Correct Answer : Haematite
Iron is mostly obtained from minerals hematite and magnetite. In smaller degrees, it can also be obtained from the minerals taconite, limonite and siderite, according to Jefferson Lab.
Correct Answer : Zinc
