Which statement describes the light reaction of photosynthesis?

Water molecules are split apart.

Air and water create energy for a plant.

Water molecules are combined to make food.

Carbon dioxide is put together with glucose.

Water molecules are split apart.

Explanation: In the light dependent reactions of photosynthesis, sunlight provides the energy for splitting of water into its components: hydrogen and oxygen. This reaction is known as the photolysis of water. The oxygen is evolved as a byproduct. In this light dependent reactions, the light energy absorbed is used for the splitting of water molecules and it is also conserved as ATP and NADPH which are used to drive the carbon fixation reactions of photosynthesis.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.