What is carbon fixation, and how does it relate to photosynthesis?

it is the absorption of co2 from the air; , and it occurs during the light-dependent reactions.
it is the reduction of co2, and it occurs during the calvin cycle.
it is the conversion of co2 into organic compounds, and it forms 3-pga.
it is the production of co2 during regeneration, and it forms rubp.

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e