Question

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

Explanation:

1. Analyzing the graph, we can see that the peak values of atmospheric CO₂ concentration increase year - on - year from 2019 to 2022.
2. For each year, the CO₂ concentration in January is higher than in April as shown in the graph.
3. The highest concentration occurs in 2022, not 2020.
4. The graph shows that the rise and fall of CO₂ levels occur around the same months each year. For example, it generally starts to rise around April - July and starts to fall around October - January.

Answer:

Each year's peak atmospheric CO₂ concentration was greater than that of the previous year.
Each year, there was more CO₂ in the atmosphere in January than there was in April.
Atmospheric CO₂ levels increased and decreased during roughly the same months each year.