Which of these would be affected immediately, if energy from the Sun were
stopped?
F. the flying birds
G. the ability of wood to burn
H. the chemical reaction that makes ash
J. the growth of trees

J. the growth of trees

Explanation:

The growth of trees would be greatly impaired if the energy from the sun were stopped.

Plants generally use the energy from the sun to obtain their nourishment. This same process makes food available in the ecosystem.

i'm pretty sure its b i might be wrong though!