Effects of Clouds on Climate
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Questions and Answers

What is the purpose of artificial selection?

  • To decrease genetic variation in a population
  • To cause species to experience random changes
  • To prevent species from adapting themselves
  • To push populations toward favorable trait combinations (correct)

Which process explicitly does not make a population better adapted to the environment?

  • Genetic drift
  • Selective pressures (correct)
  • Mutation
  • Gene flow

What is the role of genetic drift in changing the genetic profile of a population?

  • Brings new variants of traits into populations
  • Changes the genetic profile due to random deaths (correct)
  • Creates new variations in the population
  • Selects more variants over others based on selective pressure

How does natural selection impact individuals within a population?

<p>By passing on favorable traits to offspring (C)</p> Signup and view all the answers

Which factor is essential for adaptive changes in species through natural selection?

<p>Genetic variation between individuals in a population (D)</p> Signup and view all the answers

What distinguishes artificial selection from natural selection?

<p>Artificial selection focuses on pushing populations towards specific trait combinations (C)</p> Signup and view all the answers

What is the initial impact of predation on prey populations?

<p>Predators only target the most vulnerable individuals. (B)</p> Signup and view all the answers

How does the survival of individuals in prey populations affect the next generation?

<p>Surviving individuals produce more offspring similar to them. (D)</p> Signup and view all the answers

What role does reciprocal selection pressure play in predator-prey relationships?

<p>Predators and prey engage in an 'arms race' of adaptations. (D)</p> Signup and view all the answers

What happens to prey populations over time due to predation?

<p>Prey populations become more adapted to avoid predation. (D)</p> Signup and view all the answers

How does the survival of predators affect the next generation?

<p>Surviving predators produce more offspring like them. (D)</p> Signup and view all the answers

What is the role of clouds in affecting global temperatures during the day?

<p>Clouds reflect sunlight back into space, causing cooling. (B)</p> Signup and view all the answers

What is the role of clouds in affecting global temperatures during the night?

<p>Clouds trap heat near the Earth's surface, causing warming. (C)</p> Signup and view all the answers

What is an example of a positive feedback loop in the context of global warming?

<p>The warming of the atmosphere increases evaporation and cloud cover, leading to more heat being trapped. (C)</p> Signup and view all the answers

What is the role of CO2 emissions in global temperature rise?

<p>CO2 emissions trap heat in the atmosphere, causing warming. (C)</p> Signup and view all the answers

What is the role of greenhouse gases in ocean acidification?

<p>Greenhouse gases decrease the pH of the oceans, causing acidification. (C)</p> Signup and view all the answers

What is the role of fossil fuels in global temperature rise?

<p>Fossil fuels release greenhouse gases, trapping heat in the atmosphere and causing warming. (D)</p> Signup and view all the answers

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