Answer:
The correct answer is d) atmospheric air pressure
.
Explanation:
The atmospheric pressure, also known as barometric, is what causes the weight of the mass of air that is acting on the earth.
This value will be higher or lower, depending on the altitude at which we are, with reference to the lowest point considered, which is usually the sea level, but is also influenced by some atmospheric effects produced by the circulation of currents of warm or cold air.
Theoretically, it is considered that the maximum value of atmospheric pressure is achieved at sea level, although in some parts of the earth there are areas below that level. Its value at this point corresponds to 1013 mbar or 760 mm Hg. The value of 1 atmosphere (atm) is also commonly used as a reference unit, but is not included in the International System of Units.
It is also known as barometric pressure, due to the instrument used for its measurement. It was Evangelista Torricelli who in 1643 invented the first barometer, although the name was given by Edme Mariotte some years later.
Answer:

Ways for pollution free environment are :-
- Follow the 3 Rs ⇻ Reduce, Reuse & Recycle.
- <u>Reduce</u> the consumption of plastic products (use glass bottles, paper bags etc.)
- <u>Reuse</u> old & worn out things instead of throwing them away.
- <u>Recycle</u> your paper & plastic products.
- Use public transport, cycles or just walk ➟ this will reduce smoke & hence will reduce air pollution.
- Turn off the lights & fans when not in use ⎆ for less consumption of energy.
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# ꧁❣ RainbowSalt2²2² ࿐
Answer:
Deforestation
Explanation:
Sub-Saharan Africa simply refers to the southern part of the African continent which covers many of the countries. It covers a large geographical area. The area faces a lot of environmental problems that mostly includes the pollution such as water, soil, air, mining activities also affects the area, deforestation, and climate change.
From the above give options, deforestation is the major environmental problem in the Sub-Saharan Africa.
D. A car that went through all the car washes
that way the car would have more experiences