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 />
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Convection is the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in the transfer of heat.
The correct answer is D) fern gametophyte bearing only antheridia.
