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
Correct Answer : Anthracite
Anthracite : The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.
Correct Answer : Chlorophyll
Correct Answer : Dog
The domestic dog is a domesticated descendant of the wolf. The dog derived from an ancient, extinct wolf, and the modern grey wolf is the dog's nearest living relative. The dog was the first species to be domesticated, by hunter–gatherers over 15,000 years ago, before the development of agriculture.
