Which of the following statements is true:
a.) Any microorganism that enters the body will result in disease symptoms.
b.) Regular use of antibiotics is important for maintaining a well regulated immune system.
c.) MALT is a minor component of secondary lymphoid tissue.
d.) Opportunistic pathogens cause disease in individuals with weak or impaired immune systems.
e.) The human microbiome is primarily composed of fungi and viruses.

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.