This is the main human activity that contributes to global warming.
a. massive dumping of pesticides into the world's oceans
b. high demand and depletion of the world'd oil supply
c. burning of fossil fuels***
d. increase of levels of chlorine poured into the shorelines
You are right.
The correct answer is c. burning of fossil fuels.
To arrive at this answer, we need to understand what global warming is and the activities that contribute to it.
Global warming refers to the long-term increase in Earth's average surface temperature. It is primarily caused by the greenhouse effect, where certain gases trap heat in the atmosphere. These gases, known as greenhouse gases, include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases.
Now, let's analyze the options given:
a. Massive dumping of pesticides into the world's oceans: While the dumping of pesticides can harm marine ecosystems, it is not a significant contributor to global warming.
b. High demand and depletion of the world's oil supply: Depletion of oil reserves can have environmental consequences, but from a global warming perspective, it is more related to the burning of these fossil fuels rather than their depletion.
c. Burning of fossil fuels: This is the main human activity that contributes to global warming. When fossil fuels like coal, oil, and natural gas are burned for energy, they release greenhouse gases into the atmosphere, primarily carbon dioxide (CO2). These emissions trap heat and lead to the warming of Earth's surface.
d. Increase of levels of chlorine poured into the shorelines: While increased levels of chlorine can have negative impacts on marine life and ecosystems, it is not a significant contributor to global warming.
Therefore, the correct answer is c. burning of fossil fuels.