The body uses non-specific immune responses as the first line of defense when we are exposed to pathogenic or disease causing organisms. Which of the following factors is a nonspecific response?

A. Antibodies are produced after an infection.

B. Bacterial cell surface proteins start a response.

C. Unbroken skin provides a physical barrier.

D. Vaccine injections will imitate viral exposure.

C

Explanation:

A nonspecific response is a defense you are born with. You were born with unbroken skin to be a physical barrier.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.