Humans are protected by some infections by specialized cells which produce chemicals that a- destroy microbes
b- recycle nutrients
c- allow locomotion
d- coordinate movement

The answer is the option a. Humans are protected from some infections by specialized cells wich produce chemicals that destroy microbes. Those cells are white blood cells, also named leukocytes. Leukocytes attack bacteria, viruses and germs to protect our body from infectious diseases.

You should provide a picture to show where the arrow is pointing and which information that is given. but there are 3 branches of the government, legislative, executive, and judicial. legislative makes laws, executives pass laws, and judicial are the courts