Respiration and photosynthesis are studied because these two fundamental processes are needed for the energy metabolism required for all life.
(Respiration and photosynthesis; are studied; because these two fundamental processes are needed for the energy metabolism) (these two fundamental processes; are needed; for the energy metabolism) (the energy metabolism; required; for all life)
Respiration and photosynthesis these two fundamental processes the energy metabolism
are studied are needed required
because these two fundamental processes are needed for the energy metabolism
for the energy metabolism
for all life