The History of the Earth and Life on Earth Unit 1.2
Which of the following statements correctly identifies technological advancements that led to population growth during the Green Revolution and the Industrial Revolution? a.) Chemical fertilizers increased crop yields. b.) Traditional farming practices were rediscovered. c.) Transportation fatalities decreased. d.) The availability of antibiotics improved life expectancies.
*a.) Chemical fertilizers increased crop yields.*
Which of the following was likely the cause of the Ordovician-Silurian extinction? a.) Melting glaciers b.) Increasing ozone levels c.) Rising carbon dioxide levels d.) Rising radiation levels
*a.) Melting glaciers*
Which of the following statements about the theory of tectonic plates and continental drift is NOT true? a.) Tectonic plates float directly on Earth's molten core. b.) Continental drift led to an increase in biodiversity. c.) Earthquakes are the result of tectonic plates rubbing when they pass one another. d.) Continents are the surface parts of larger tectonic plates.
*a.) Tectonic plates float directly on Earth's molten core.*
According to the 1-year calendar model based on the Big Bang theory, the solar system was created in __________. a.) December b.) September c.) August d.) January
*c.) August*
What was one of the differences between living in water and living on land that plants and animals had to adjust to? a.) Increased salinity b.) Excess ozone c.) Radiation from the Sun d.) Carbon dioxide
*c.) Radiation from the Sun*
Which of the following statements about human population growth is true? a.) The global population stayed fairly high until 1350. b.) The world population quadrupled between the years 1959 and 1999. c.) In 1800, there were 1 million people on Earth. d.) The population rose by 1 billion between 1999 and 2012.
*d.) The population rose by 1 billion between 1999 and 2012.*
Some early life-forms developed photosynthesis, which released free oxygen. When oxygen is impacted by UV radiation, it forms __________. a.) sulfur dioxide b.) water c.) oxygen d.) ozone
*d.) ozone*
