A convergent plate boundary is when two plates move towards each other, also known as a destructive plate boundary. So, the answer is A.
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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 .
All tropical cyclones form over the ocean.
Answer: Option B
<u>Explanation:</u>
The tropical cyclones form above the ocean. To form a cyclone, warm, moist air rises above the ocean and as it rises, it creates an area of lower air pressure and air of high pressure area is also shifted to areas of low pressure area which when rises form clouds. This whole system of cloud and wind spins together fed by ocean's heat and as it spins faster and faster it results in a cyclone forming an eye in the center.