Which makes viral infections difficult to defend?
a.) the immune system must attack the body’s own cells

b.) viruses are attacked by a nonspecific immune response

c.) viruses live outside of cells

d.) macrophages work slowly

Viral infections are difficult to defend as viruses are attacked by a nonspecific immune response.

Explanation:

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.

answer australia and antarctica;