Which of the following best represents an isolated system?
a. outer space
b. the moon
c. the ocean
d. the atmosphere

What maintain homeostasis when a persons internal body temperature is 97.5°f

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?

Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i