How many mass extinctions happened in geologic past

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Reference no: EM133207072 , Length: Word count: 4 Pages

Assignment Task:

David Attenborough's: A Life on Our Planet

Please watch A Life on Our Planet (available on Netflix) and answer the following questions.

Question 1: Where does the opening scene of this documentary take place?

Question 2: Why is the location of the opening scene important? Explain.

Question 3: At the time of this film, how old was Attenborough?

Question 4: In 1937:

a. The world population was:

b. The concentration of carbon in the atmosphere was:

c. The remaining wilderness was:

Question 5: When Attenborough was a boy, what did he search for near his home?

Question 6: How many mass extinctions have happened in the geologic past?

Question 7: Approximately how many years are there between each of these mass extinctions?

Question 8: Approximately how old is the Earth?

Question 9: Attenborough refers to "today" the modern world as what?

Question 10: Why is polar ice important on Earth?

Question 11: What does Attenborough state is the most important human invention?

Question 12: In 1954:

a. The world population was:

b. The concentration of carbon in the atmosphere was:

c. The remaining wilderness was:

Question 13: In 1960:

a. The world population was:

b. The concentration of carbon in the atmosphere was:

c. The remaining wilderness was:

Question 14: When did the Apollo space mission take place? Why was this an important global event?

Question 15: In 1978:

a. The world population was:

b. The concentration of carbon in the atmosphere was:

c. The remaining wilderness was:

Question 16: Global news/media in beginning in the late 1960s was important for the environment/conservation in what ways?

Question 17: Orangutan mothers have been documented spending how many years with their young?

Question 18: In the last several decades, what have humans been transforming vast amounts of tropical rainforest into?

Question 19: To date, approximately how much of the world's rainforests have been cleared?

Question 20: In 1997:

a. The world population was:

b. The concentration of carbon in the atmosphere was:

c. The remaining wilderness was:

Question 21: What are ocean hotspots and why are they important?

Question 22: Approximately how much of the oceans' large fish have commercial fishing fleets removed from the ocean?

Question 23: In 1998, Attenborough and the Blue Planet film crew documented what event?

Question 24: What was a feature off all 5 mass extinctions in the geologic record?

Question 25: With continued large-scale human burning of fossil fuels, what will happen to global temperature?

Question 26: If global temperature continues to rise, what will happen to polar ice?

Question 27: Compared to when Attenborough was born, how much warmer is Earth today?

Question 28: Summer sea ice has reduced by how much over the last 40 years?

Question 29: Attenborough states that humans have overfished approximately how much of fish stocks?

Question 30: Attenborough states that humans cut down approximately how many trees each year?

Question 31: What does Attenborough state that humans are replacing "wild" with?

Question 32: Approximately what percentage of birds on Earth are domestic?

Question 33: In 2020:

a. The world population is:

b. The concentration of carbon in the atmosphere is:

c. The remaining wilderness is:

Question 34: If business as usual continues, by 2035, it is predicted that much of the tropical rainforests will turn into what type of habitat?

Question 35: If business as usual continues, by 2035, what is predicted to happen to biodiversity?

Question 36: Why is thawing of permafrost bad for the planet?

Question 37: What will happen to Earth is soils continue to be overused?

Question 38: Attenborough states that to restore stability to Earth, we much do what?

Question 39: If the present growth rate of the human population continues, how many people will there be on this planet by 2100?

Question 40: Will the human population ever reach a maximum capacity? Explain.

Question 41: How does increasing the standard of living globally contribute to stabilizing the global population? Explain.

Question 42: Near the end of this film, Attenborough provides some ways that we can help our planet provide three examples:

a.        

b.        

c.        

Question 43: What country is the second largest exporter of food (despite its size)?

Question 44: At the conclusion of this film, Attenborough says we must rediscover what?

Question 45: What location does the last scene in this film take place? Explain why this is significant.

Reference no: EM133207072

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