They basically want you to write a newsletter over Africa's water drying up, lose of vegetation and their wildlife dying (poaching). They want you to go in-depth about how the climate changing and the things that they do in their everyday life are affecting their living structure!
Doppler effect and redshift as the light coming from stars from the distance can be shifted in the same way as a pitch of sound does
Answer:
The correct answer is A. Fossil fuels are cheaper than alternative forms of energy
Explanation:
Fossil fuels are made from organic matter of dead animals and mainly plants who were buried in the soil over hundred and thousand of years. We use fossil fuels because they are the best source to provide energy in the current time.
Fossil fuels are easily available and are present in very large amount which is the main reason for it to be cheaper. Fossil fuels like coal, petroleum or natural gas are more cheaper and efficient than alternative forms of energy like solar or wind energy.
But in future these fossil fuel will not be there and alternative forms of energy will become the primary and cheaper source of fuel.
