What can chloroplasts not do without light

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Creating new things to solve problems and improve life depends on the close interaction of which two fields?