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Answer:
The catalyst decreases the activation energy needed
Answer:
1) Use of aerosol sprays containing CFCS----Increase in greenhouse gases and causes Ozone depletion.
2) Use of extinguishers------ in the Combustion of fossil fuels.
3) Use of carbon tetrachloride as an
industrial solvent-----Agricultural activities
Explanation:
Aerosol sprays containing CFCS which is a harmful substance causes depletion of ozone layer which protects us from harmful radiation of the sun.
Carbon tetrachloride is used in agriculture activities such as a fumigant in the storage house for preventing the grains from pest attack.
Extinguishers are used for controlling the Combustion of fossil fuels.
These are symptoms of HEAT EXHAUSTION. Heat exhaustion usually occur as a result of over heating of the body. Symptoms may also include heavy sweating,slight fever, excessive thirst, fainting,nausea, rapid pulse.etc.
Heat exhaustion can be prevented by protecting oneself from excessive heat.
