The increase in CO₂ in the atmosphere that has been
recorded by scientists in recent decades is mostly due to
respiration from terrestrial and oceanic ecosystems.

Earth’s temperature has increased in recent decades but the rate
of change is slower than the rate of change for a typical glacial
to interglacial switch in the last 400 000 years.

CO₂ from fossil fuels has led to recent acidification
of the oceans.

CO₂ from fossil fuels is causing the increase in
CO₂ in the atmosphere that has been recorded by
scientists in recent decades.

The increase of CO₂ in the atmosphere, recorded by
scientists in recent decades, is largely due to natural processes
in the biosphere.