Answer:
Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.
Explanation:
Heres a few examples:
-washing your hands
-use of protective equipment like, gloves, masks, and eyeglasses.
-coughing in your arm
-sneezing into a tissue
-using sterile instruments and devices.
Answer:
Blocking the rays physically....
Explanation:
There have two ways that sunscreen protect minerals nanoparticles from uv radiations. Those are; blocking the rays physically
Absorbing them chemically.
Minerals powders are in nanoparticles from they come on clear without leaving much of white residue on skin
Answer:
The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. It is essentially the body's electrical wiring. Structurally, the nervous system has two components: the central nervous system and the peripheral nervous system.
Explanation:Hope this helps :)
