Answer: The answer is D. All of the above
Its A. it prevents sperm from reaching the egg and fertilizing it.
Answer: pretty sure it’s the number of mitochondria in muscle cells
Explanation:
Answer:
The answer is rhythmic contraction of the uterus wall.
Explanation:
this is because when muscle is overly used, it brings about contraction
Answer:
migration is brushing hair
putting a puzzle together is trial and error
getting hungry before lunchtime is a conditional response
brushing your hair is a habit
eye blinking is a reflex.
Explanation:
