Question

To synthesise proteins, plants need __________ along with carbon dioxide and water. 

Oxygen

Argon

Helium

Nitrogen​

Answer 1

Answer:

The leaves have a green pigment called chlorophyll. It helps leaves to capture the energy of the sunlight. This energy is used to synthesise (prepare) food from carbon dioxide and water. Since the synthesis of food occurs in the presence of sunlight, it is called photosynthesis (Photo: light; synthesis : to combine).

Answer 2

Answer:

Oxygen .

i hope it will help you.