A) 19th century B) 15th century C) 21st century D) 17th century
A) Scientific Revolution B) American Revolution C) Industrial Revolution D) French Revolution
A) Carbon dioxide B) Nitrogen C) Oxygen D) Helium
A) Causing cooling of the Earth B) Preventing greenhouse gas emissions C) Releasing heat into the atmosphere D) Absorbing heat and carbon dioxide
A) Antarctica B) Arctic C) Amazon rainforest D) Sahara desert
A) Methane B) Carbon monoxide C) Sulfur dioxide D) Nitrous oxide
A) Holocene B) Pleistocene C) Miocene D) Anthropocene
A) Human activities B) Volcanic eruptions C) Plate tectonics D) Solar radiation |