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. each year, there was more co₂ in the atmosphere in january than there was in april. each years peak atmospheric co₂ concentration was greater than that of the previous year. atmospheric co₂ levels increased and decreased during roughly the same months each year. the highest concentration of atmospheric co₂ occurred in 2020.

Explanation:

Step1: Analyze January - April comparison

By observing the graph for each year (2019 - 2022), we can see that in each year, the CO₂ concentration in January is lower than in April. So the first statement is false.

Step2: Analyze peak - to - peak comparison

The peaks of atmospheric CO₂ concentration for 2019 - 2022 are increasing year - by - year. So the second statement is true.

Step3: Analyze seasonal pattern

The graph shows that the increase and decrease of CO₂ levels occur in approximately the same months each year (increase from around October - April and decrease from around April - October). So the third statement is true.

Step4: Analyze highest concentration year

The highest concentration occurs in 2022, not 2020. So the fourth statement is false.

Answer:

Each year's peak atmospheric CO₂ concentration was greater than that of the previous year.
Atmospheric CO₂ levels increased and decreased during roughly the same months each year.