Correct Answer : Birds
Ornithology, a branch of zoology dealing with the study of birds. Most of the early writings on birds are more anecdotal than scientific, but they represent a broad foundation of knowledge, including much folklore, on which later work was based.
Correct Answer : Chlorine
Correct Answer : Nitrate
Nitrate is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins.
Correct Answer : Ecosystem
The ecosystem is defined as a functional unit of ecology because it is the smallest unit of nature, which is independent and self-sustaining due to various interactions between abiotic and biotic components and different organisms among themselves.
Correct Answer : Harold Urey
Harold Urey won the Nobel Prize in Chemistry in 1934 for discovering deuterium, the key component of heavy water. Gilbert Lewis, a renowned chemist at U.C. Berkeley, isolated the first sample of essentially pure heavy water from ordinary water in 1933.
Correct Answer : Energy
Correct Answer : Jagadish Chandra Bose
A crescograph is a device for measuring the growth in plants. It was invented in the early 20th century by Sir Jagadish Chandra Bose.
Correct Answer : Nylon
Manmade fibres are made from various chemicals, or are regenerated from plant fibres. Examples of manmade fibres are: polyester; polyamide – (nylon); acrylics; viscose, made from wood bark; Kevlar, a high-performance fibre; and Nomex, a high-performance fibre.
Correct Answer : Lichens
Lichens are well known as sensitive indicators of air pollution, particularly for sulfur dioxide. In part, this is related to their unique biology.
Correct Answer : Copper
