The correct answer is ANTHROPOLOGIST.
An anthropologist is a professional, who engaged in the study of various aspects of human within past and present societies. Such professionals are involved in the research and study of socio-historical, linguistic, and biological aspects of human. Biologist, chemist and botanist are actively involved in the development of drugs.<span />
D. photosynthetic decomposers
Answer:
Shifting seasons are directly linked to warmer global temperatures. A slight change in temperature is enough to push the spring thaw earlier, and delay the first frost until later in the fall. ... The US EPA uses leaf and bloom dates reflecting national phenology trends to indicate climate change.