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