Describe how urine is formed, beginning with the blood.

Explain why methicillin resistant staphlococcus aureus (mrsa) is more prevalent now than it was only 30 years ago. a. antibiotics cause mutations in staphlococcus aureus that lead to an increase in the number of methicillin-resistant strains. b. methicillin resistance causes an infection to spread more rapidly.c. frequent and inappropriate use of methicillin-type antibiotics has provided selective pressure that has resulted in an increase in the proportion of methicillin-resistant strains of staphlococcus aureus.d. diseases like aids have made people more vulnerable to infections from staphlococcus aureus.

Explain why many people are concerned about uv rays? explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?

How does school affect your personal physical fitness and dietary practices?