What is a negative feedback in the context of global warming?

The con or downside of global warming. For example:
Length of the growing season of trees- positive or negative feedbacks to an increase in atmospheric temperature?

This is negative feedback
Increase in temperature -> Longer growing season of trees due to more access to warmer temperature -> More uptake of atmospheric CO2 by tree growth -> Less atm CO2 -> Decrease in temperature

Biochemistry, it deals with the chemical constitution, the breakdown and the synthesis of plant and animal products.

1.fossils 2.analogous organs 3.homologous organs