Statistics for Science Multiple Choice #2

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Question	Answer	% Correct
What has been the primary cause of the increase in the temperature of the Earth's atmosphere in recent decades?	Emission of carbon dioxide from the burning of fossil fuels	94%
About what percent of the Earth's atmosphere is made up of Oxygen?	21%	81%
What causes the sound of approaching objects to be at a higher pitch than receding objects?	Doppler effect	80%
True or false. Every single human on Earth has the same number of chromosomes.	False	77%
Which of these animals is most closely related to homo sapiens?	Humpback whale	75%
Is it possible to see Saturn from Earth with the naked eye?	Yes	75%
About what percentage of an atom's mass is in its nucleus?	> 99.9%	74%
What is the approximate diameter of the universe?	We don't know, possibly infinite	72%
What is the coldest possible temperature?	−273.15 °C	71%
When did the non-avian dinosaurs go extinct?	66 million years ago	67%
Can a virus alter your DNA?	Yes	63%
Is a tree-kangaroo a real animal?	Yes	60%
What is a telomere?	A region of repetitive DNA which protects the end of a chromosome	59%
Which of these planets is the largest?	Earth	58%
About how much has the level of the sea risen since 1900?	0.2 meters	56%
What is the name of the current geological epoch, which began about 11,650 years ago?	Holocene	56%