The trolleys have been reduced over the last decades, after their initial increase as a public transportation, when new and better ways were discovered/produced for transport, their decline has started.
The buses since their invention, had grown in number and became a very important part of every city's public transportation, and still are.
The rapid transit is the most recent one of the mentioned in here. It's popularity has grown, number increased, and is very practical because it is not causing traffic mess. It is very important transport asset nowadays and makes lives of millions of people much easier.
Answer:
Explanation:
Catalytic converters are used as an exhaust emission control device and are used to remove toxic gases and products by catalyzing the redox reactions.
The Corporate Average Fuel Efficiency (CAFE) standards were set of rules enacted in the USA to increase the efficiency of fuel engines and hence to reduce the emission rates .
The ethanol as compared to the conventional gasoline emits 50 per cent or lesser greenhouse gases to the environment .
Answer: Extreme heat and pressure from deep within Earth cause changes to the rocks appearance, structure, and composition.
Explanation:
Remember!
- Sedimentary rocks are types of rock that are formed by the accumulation or deposition of small particles/sediments.
- Igneous rock is formed through the cooling and solidification of magma or lava
- Metamorphic rocks are changed by heat and pressure
Answer:
C. occurs when many atomic bonds are broken quickly and rock pieces separate.
Explanation:
Planet earths Brittle deformation occurs when many atomic bonds are broken quickly and rock pieces separate.
This brittle deformation occurs when rocks along active plate boundaries are subjected to physical stress such as change temperature which causes their atomic bonds to break and the rock becomes shattered, this is termed brittle deformation.
There is also ductile deformation in rocks
<span>B) Hurricanes derive their energy from heat.
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A hurricane begins with a pre-existing
disturbance, an area of low pressure. Favorable conditions advances to the
formation of hurricanes. The first one which greatly contributes to the
seasonal variation in the number of hurricanes that form in the Atlantic is an
increase in sea surface temperatures. For a tropical depression to mature into a
hurricane, it requires heat energy from the ocean surface.</span><span>
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