Number 13 is C
Number 14 is C
Number 15 is B
I think sperm is the answer
Answer and Explanation:
The main environmental factors that can modify the life cycle not only of insects, but of all living beings are temperature, water availability and human activity, as variations in these factors can both prevent the life cycle from being completed, how you can accelerate and delay the phases of this cycle in different ways.
The type of digestion that involves the actual breaking apart and chewing of food is called MECHANICAL DIGESTION. Mechanical digestion increases the surface areas of the food which makes the food easier to digest. Examples of mechanical digestion are mastication and peristalsis.
BONES: calcium, exercise.
MUSCLES: exercise, calories.
