Chloroplast are found mainly in the leaves, this is because they are used in photosynthesis to produce food for the plant . The reason they are in the leaves is because the leaves have a large surface area which helps absorb more sunlight than any other parts of the plant and sunlight is required for photosynthesis.
It is in greater amount in the month when the sun shines at its most. July is one of of the month.
Not sure what you mean by Head of the comet, but I know the other 3 are apart og the comet, so I would have to say C.
Wear safety goggles while looking into the opening of the test tube
A cell. it is the smallest unit of life that can reproduce indepentantly
Here are some outputs of photosynthesis to consider: ATP, carbon dioxide, and H20.