What does it mean when there’s an increase of white blood cells in the body? A) Nothing, the amount always varies
B) There is no oxygen in the body
C) Your body just finished fighting an infection
D) There is an infection in the body

*will mark brainliest* which of the following best describes a viral infection, such as the common cold? a. virus grow and develop in the body. b. virus are living organisms. c. viruses require host cells in the body. d. viruses can be treated with antibiotics.

How does human environment effect the biosphere

Diffusion and osmosis are forms of passive transport