The monomer must be able to form stable covalent chemical bonds between units in order to polymerize.
Overproduction - An organism gives birth to too many children
Genetic Variation - The offspring each have genetic differences in appearance, behavior, etc
Struggle to Survive - Offspring must fight in order to gain essential resources (food, water, mates, etc)
Successful Reproduction - Organism produces offspring with beneficial adaptations that aid in survival
People because it’s for fun meaning the people use it
Answer: salivary glands
Explanation: i just remember from 4th grade health class
