The control group outs the one that you don't change. The reason you don't change it is because you use it as a comparison with the other groups.
The long bones are those that are longer than they are wide.
They are one of five types of bones long, short, flat, irregular and sesamoid.
Answer:
Ferns do not have true leaves as many plants do, but structures called fronds. These fronds are split down into leaflets called pinnae. These fronds are green and the fern gets its food via photosynthesis. Ferns reproduce by spores in an alternating generations.
Explanation:
i studied ferns for years
