More and more frequent epidemics and pandemics will take place in our future because:

a) Climate change minimizes the antibodies in humans that fight off pathogens.
b) A warming planet harbors more pathogens and deforestation increases the likelihood that humans will encounter them.
c) Pathogen resistance decreases with the rise of global community chains.
d) Pathogens are created by transnational corporations and responding to global movement.