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Which Is True of the Amount of C in Our

Question 22

Multiple Choice

Which is true of the amount of C in our atmosphere?

A) C Which is true of the amount of C in our atmosphere? A) C is the most abundant gas in the atmosphere. B) The level of C has been decreasing at the rate of 3.1% per year since 2000. C) The level of C increased at the rate of 1.1% per year from 1990 to 1999. D) The level of C has been much higher during the past 800,000 years than it is now. is the most abundant gas in the atmosphere.
B) The level of C Which is true of the amount of C in our atmosphere? A) C is the most abundant gas in the atmosphere. B) The level of C has been decreasing at the rate of 3.1% per year since 2000. C) The level of C increased at the rate of 1.1% per year from 1990 to 1999. D) The level of C has been much higher during the past 800,000 years than it is now. has been decreasing at the rate of 3.1% per year since 2000.
C) The level of C Which is true of the amount of C in our atmosphere? A) C is the most abundant gas in the atmosphere. B) The level of C has been decreasing at the rate of 3.1% per year since 2000. C) The level of C increased at the rate of 1.1% per year from 1990 to 1999. D) The level of C has been much higher during the past 800,000 years than it is now. increased at the rate of 1.1% per year from 1990 to 1999.
D) The level of C Which is true of the amount of C in our atmosphere? A) C is the most abundant gas in the atmosphere. B) The level of C has been decreasing at the rate of 3.1% per year since 2000. C) The level of C increased at the rate of 1.1% per year from 1990 to 1999. D) The level of C has been much higher during the past 800,000 years than it is now. has been much higher during the past 800,000 years than it is now.