Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 34 to 38.

CAN WE CHANGE THE CLIMATE?
It may seem hard to believe that people can actually change the Earth’s climate. But scientists think that the things people do that send greenhouse gases into the air are making our planet warmer. Once, all climate changes occurred naturally. ___(1)___, during the Industrial Revolution, we began altering our climate and environment through agricultural and industrial practices. The Industrial Revolution was a time ___(2)___ people began using machines to make life easier. It started more than 200 years ago and ___(3)___ the way humans live. Before the Industrial Revolution, human activity released very few gases into the atmosphere, but now through population growth, fossil fuel burning, and deforestation, we are affecting the mixture of gases in the atmosphere. Since the industrial revolution, the need for energy to run ___(4)___ has steadily increased. some energy, like the energy you need to do your homework, comes from the food you eat. But other energy, like the energy that makes cars run and ___(5)___ of the energy used to light and heat our homes, comes from fuels like coal and oil – fossil fuels. Burning these fuels releases greenhouse gases.
(Adapted from: https://www.monografias.com/trabajos64/global-warming/global-warming2)