Question
Ultra violet radiations of the Sun do not reach the
earth because, earth's atmosphere is surrounded by –Solution
The ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth. Ozone is formed from dioxygen by the action of ultraviolet light and also atmospheric electrical discharges, and is present in low concentrations throughout the Earth's atmosphere. In total, ozone makes up only 0.6 parts per million of the atmosphere.
Variation within a pureline is due to
The innermost layer of the human gut wall is:
What is the biological basis for seedlessness in grapes?
Cell is the basic building block of life. Cell theory was put forward by?
The goal of the “Lab to Land” program launched in 1979 was:
Cotton is mainy cultivated in central part of india.which soil is best suited for cotton cultivation ?
Which of the following is a biennial crop?
Which is the fastest growing Indian major carp species?
86 Deep sowing of chickpea is better than shallow depth in rainfed areas; which of the following statements not linked with benefits of deep sowing?
A minor irrigation project covers an area of
