SCI 200--Unit 1 Challenge 2

Which of the following was a challenge for plants and animals when adapting to life on land? a.) Absorbing carbon dioxide from the atmosphere b.) Receiving enough radiation to maintain temperature c.) Moving around without water for transportation d.) Experiencing too much ozone

c.) Moving around without water for transportation

According to the one-year calendar model based on the Big Bang theory, which of the following events happened on December 31st? a.) Modern humans first appeared. b.) Life appeared on Earth. c.) The Big Bang occurred. d.) The solar system was created.

a.) Modern humans first appeared.

Which of the following statements correctly identifies technological advancements that led to population growth during the Green Revolution and the Industrial Revolution? a.) New forms of transportation increased mobility. b.) Emergency medicine improved, raising life expectancies. c.) City sizes decreased. d.) Factory working conditions improved.

a.) New forms of transportation increased mobility.

What are some of the differences between living in water and living on land that plants and animals had to adjust to? a.) Radiation from the sun b.) Excess ozone c.) Increased salinity d.) Carbon dioxide

a.) Radiation from the sun

Which of the following was a major challenge for plant and animal life adapting to land? a.) Reproducing outside of a water environment b.) Acclimating to cloud cover c.) Adjusting to decreased effects of gravity on land d.) Remaining dry away from a water environment

a.) Reproducing outside of a water environment

Before life appeared on the planet, which of the following events was NOT common? a.) Severe floods b.) Intense volcanic activity c.) Meteorites bombarding the planet d.) The entire planet was very hot

a.) Severe floods

Which of the following statements about human population growth is true? a.) Since 1350, the population has grown continually. b.) The Industrial Revolution signaled a slowing down of world population growth. c.) The population tripled over the course of 127 years. d.) The population remained constant between 1999 and 2012.

a.) Since 1350, the population has grown continually.

Which of the following items was NOT a likely cause of a major extinction event? a.) An asteroid impact b.) Carbon dioxide levels c.) Volcanic eruptions d.) A supernova

b.) Carbon dioxide levels

Which of the following statements correctly identifies technological advancements that led to population growth during the Green Revolution and the Industrial Revolution? a.) Transportation fatalities decreased. b.) Chemical fertilizers increased crop yields. c.) The availability of antibiotics improved life expectancies. d.) Traditional farming practices were rediscovered.

b.) Chemical fertilizers increased crop yields.

Some early life forms developed photosynthesis, which released free oxygen. When oxygen is impacted by UV radiation, it forms __________. a.) sulfur dioxide b.) ozone c.) oxygen d.) water

b.) ozone

According to the one-year calendar model based on the Big Bang theory, the solar system was created in ___________. a.) January b.) December c.) August d.) September

c.) August

Which of the following statements correctly identifies technological advancements that led to population growth during the Green Revolution and the Industrial Revolution? a.) The population in cities was reduced. b.) Antibiotic use increased. c.) Clean water became more accessible. d.) Food production became more specialized.

c.) Clean water became more accessible.

Which of the following statements about the theory of tectonic plates and continental drift is true? a.) The separation of the continents was generally harmful to biodiversity. b.) Continental drift occurs when tectonic plates stop moving. c.) Continents are the surface parts of tectonic plates. d.) When tectonic plates push together, volcanoes are formed.

c.) Continents are the surface parts of tectonic plates.

According to the one-year calendar model based on the Big Bang theory, which of the following events happened in September? a.) Homo sapiens appear on Earth. b.) The solar system comes into existence. c.) Life appears on Earth. d.) The Big Bang occurs.

c.) Life appears on Earth.

Which of the following items was a likely cause of a major extinction event? a.) Rising CO2 levels b.) Rising radiation levels c.) Melting glaciers d.) Increasing ozone levels

c.) Melting glaciers

Which of the following statements about the theory of tectonic plates and continental drift is NOT true? a.) About 250 million years ago, the continents were merged together into one supercontinent. b.) Tectonic plates can push, pull, slide or go under one another. c.) The movement of plates has reduced over time and will eventually cease. d.) Plates have always been in motion and still are in motion.

c.) The movement of plates has reduced over time and will eventually cease.

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.) The population rose by one billion between 1999 and 2012. d.) In 1800, there were one million people on Earth.

c.) The population rose by one billion between 1999 and 2012.

Which of the following statements about the theory of tectonic plates and continental drift is NOT true? a.) Continents are the surface parts of larger tectonic plates. b.) Tectonic plates float on the earth's molten core. c.) Continental drift led to an increase in biodiversity. d.) Earthquakes are the result of tectonic plates colliding.

d.) Earthquakes are the result of tectonic plates colliding.

Which of the following events relates to the earth's atmosphere after life began to form? a.) Intense volcanic activity and meteorite strikes were common. b.) UV radiation and lightning provided energy for molecular formation. c.) There was no free oxygen in the atmosphere. d.) Photosynthesis created levels of oxygen toxic for some organisms.

d.) Photosynthesis created levels of oxygen toxic for some organisms.

Which of the following items is a result of asteroid impacts that scientists have linked to extinctions? a.) Massive floods b.) Radiation c.) Supernovae d.) Severe storms

d.) Severe storms

Which of the following statements about human population growth is true? a.) The development of agriculture slowed down population growth. b.) The population was at its highest in 1999. c.) The Industrial Revolution was the beginning of a steady decline in the population. d.) The total human population increased by one billion people between 1999 and 2012.

d.) The total human population increased by one billion people between 1999 and 2012.