Answer:
A. Integumentary system
Explanation:
The integumentary system consists of the skin,hair and nail. This system consists of the largest organ in the body. The skin helps in protection against pathogens by shielding the internal body system from external objects.
The skin also helps in Vitamin D production through sunlight.
It also helps to prevent dehydration through regulation of water loss.
B. law of conservation of mass
This is why the total amount of and element before and after a chemical reaction is constant.
Dang that’s crazy sjhshsnsja
Answer:
Yeah it's totally correct
