Question

source data: noaa global monitoring laboratory, measured at the mauna loa observatory. select the true statements about the atmospheric co₂ levels from 2019 to 2022. the highest concentration of atmospheric co₂ occurred in 2022. each year, there was more co₂ in the atmosphere in april than there was in january. the peak atmospheric co₂ concentration in 2021 was greater than it was in 2019. atmospheric co₂ levels increased and decreased during roughly the same months each year.

Explanation:

• By observing the graph, the highest point of the curve is in 2022, so the highest concentration of atmospheric CO₂ occurred in 2022.
• For each year shown, the CO₂ level in April is above that in January.
• The peak in 2021 is higher than the peak in 2019.
• The pattern of increase - decrease in CO₂ levels follows a similar monthly cycle each year, with increases in the latter part of the year and decreases in the earlier part.

Answer:

The highest concentration of atmospheric CO₂ occurred in 2022.
Each year, there was more CO₂ in the atmosphere in April than there was in January.
The peak atmospheric CO₂ concentration in 2021 was greater than it was in 2019.
Atmospheric CO₂ levels increased and decreased during roughly the same months each year.