The skeletal system since the brain is apart of the skeletal system.
Answer:
D
Explanation:
Sexual reprduction is when a sperm cell fertilzes an egg cell.
Answer:
Sun.
Explanation:
The Sun and other gasses work together and increase the greenhouse gasses.
Answer:
Finger prints, hair, body fluids( blood, saliva, semen), bone.
Explanation:
C4H10 AND C2H5 have the same empirical formula
