B may d answer 4 following question
Chloroplasts<span> are organelles used by plant cells to make a sugar called glucose from sunlight. Energy stored in the chemical bonds of the sugar molecules can be used, either by the plants or by the animals that eat them, to fuel body processes.</span>
Answer:
process of copying DNA prior to cell division
Khan Academy is great! Also, Alison (it's a website) has some free courses as well.
