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pollutant gases such as nitrogen monoxide and nitrogen dioxide. They are produced during combustion, especially at high temperatures. They are harmful to human health. They can react with water to make nitric acid, which may end up in the soil, where it makes nitrates, which is of use to growing plants.
a small, corky pore or narrow line on the surface of the stem of a woody plant that allows the...
refers to an animal that is active during twilight i.e. at dawn and dusk.
the use of modern technology to manipulate living organisms to obtain products from them that...
reproductive or sex cells that contain the haploid set of chromosomes. The male gametes are...