Final answer:
The study of climate change falls under the field of Environmental Biology, which includes examining the impacts on ecosystems, species distribution, and phenology, all connected to ecology's broader scope.
Step-by-step explanation:
The field of biology involved in studying climate change is c) Environmental Biology. Environmental biology focuses on the relationships between organisms and their environment, which includes investigating the impact of climate change on various ecosystems. A marine ecologist, being a specialist within this broader field, studies the ocean's interactions and would consequently incorporate subjects tied to the marine environment, such as ocean temperatures, marine populations, and the overall health of marine ecosystems.
From this perspective, climate change is crucial as it affects species distributions, phenology, and biogeography, all of which are components within the scope of environmental biology. Predicting shifts in marine ecosystems due to human population changes, such as those affecting suitable habitats for marine species, would also fall under the studies of an environmental biologist. Ecology, as a foundational element of environmental biology, integrates various scientific disciplines that contribute to our understanding of climate change effects on living organisms.