pleasee give this answers in 15 minutes today is my science exam
Answers
Answer:
(a) Ans :- The biosphere is made of three parts, called the lithosphere, atmosphere and hydrosphere. Some portions of each may not support life, however; for example, the upper regions of the atmosphere do not support life, while the lower regions do.
(b) Ans :- Soil is composed of a matrix of minerals, organic matter, air, and water.
(c) Ans :- Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources.
(d) Ans :- Purified argon and nitrogen gases are most commonly used as inert gases due to their high natural abundance (78.3% N2, 1% Ar in air) and low relative cost. Unlike noble gases, an inert gas is not necessarily elemental and is often a compound gas.
(e) Ans :- Human activities cause ozone depletion and global warming
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below).