Answer:
4 is gravitational force
Option B
Explanation:
This is a force diagram of a block on an inclined plane.
The force component is what makes up weight in the diagram. Weight is given as mass multiplied by the gravity.
Gravitational force acts downward and it is the force of attraction between all objects and the earth. It is directly proportional to mass.
Force 1 and 2 are both shear forces that acts parallel to the face of the incline. They are mostly expressed as frictional forces.
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.
I said in comment but the answer is
Pyramid of Biomass
Good luck on your assignment dear ^^
