During photosynthesis , plants capture light energy from the sun to break the bonds in reacants, such as carbon dioxide and water, and form carbon containing molecules, such as glucose. the carbon containing molecules can then be used to

The carbon molecules are used for respiration in plants.

Explanation:

In the photosynthesis process, the solar energy is used to make glucose or carbon molecules by dividing water and carbon di-oxide bond  in the presence of bacteria. Later, this glucose is transformed in pyruvate that secretes ATP through the process of respiration of plant cells.

Some of these molecules of carbon are conserved as starch for later use in plants. These are stored in roots, stem and leaves of plants. It also helps in building cellulose of cell walls.

not only is it colder, it also becomes darker, less salty, and more dense.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high