We can see that the research question that is most effective is: D. What are fossil fuels?
<h3>What is research question?</h3>
Research question is actually known to be a question which is asked by a researcher which forms the basis for his evaluation, examination, and experimentation. Every good research question must be clear and focused.
We see that the selected answer is actually clear and focused and covers other aspect of the research.
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Answer:
When oils (fossil fuels) are burned, they release an extremely large amount of carbon dioxide into our air. Carbon Dioxide is a Greenhouse gas which means it traps heat into our air which can be linked to Global Warming.
When large areas of land are cut down (deforestation) then it means Carbon Dioxide is released into our air which can also get trapped and cause Global Warming because it is a Greenhouse gas.
Another thing - As Carbon Dioxide is a Greenhouse gas - Greenhouse gases can lead to a large amount of respiratory diseases and pollution (smog) in areas where deforestation can happen or where fossil fuels are burned and used.
Explanation:
I hope that helps a little bit!
This question is incomplete because the sentence is not given. Here is the complete question:
We were driving along the sea-side, suddenly we...............................petrol
came up against
kept up with
ran out of
cut down on
The correct answer is Ran out of
Explanation:
To determine the correct option to complete the sentence, the best is to analyze the context of the sentence and then determine which one is the most appropriate option. In this sentence, the speaker suggests he and other people were driving near the sea "We were driving along the sea-side", also, the speaker describes unexpectedly something important happened with the petrol. In this context, it can be inferred was completely finished. This meaning better matches the words "ran out of" that are used when some material or resource expires or is completely depleted.
