Answer: C. World cities have market effects on a globalized urban culture.
Explanation:
The major cities of the world are are so popular that they are able to influence the decisions of people when it comes to purchasing decisions.
This is because as major cities, they are trend setters. When a new trend emerges in a city like Paris or New York, people around the world would want to copy that trend. It is very lucrative therefore, to host a fashion show in these cities as the adoption of the presented fashion by the city increase the chances of the fashion making it globally.
Greenhouse emissions of tar sand, per barrel, are more than conventional crude oil. This is because, it takes more energy to extract the bitumen from the tar sand and more so, to convert the bitumen to usable oil taking up even more energy. This energy is usually derived from burning natural gas. Emissions by tar sand are approximately 100 kg CO2 per barrel while conventional oil is approximately 30 kg CO2 per barrel.
Answer and explanation:
The sun's core is so hot that there is so much pressure that nuclear fusion takes place. Hydrogen is changed to helium and nuclear fusion creates photons (light) and heat.
