Which best describes the role of immunosuppressants in transplant surgeries?
O to increase antibody production to fight off more pathogens
O to suppress the immune system to allow pathogens to build immunity
O to decrease antibody production to reduce the attacks on the new organ
O to allow for recognition of antigens to determine compatibility

Aboy with an extra x chromosome probably has which of the following syndromes?

Several billion years ago which gas was the least prevailant in the atmosphere

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.