Question

enviro sci vocabulary--use words or pictures slideshow for help
climate change greenhouse effect paris agreement anthropogenic
renewable energy photovoltaic cell nonrenewable energy fossil fuels
biomes biodiversity invasive species keystone species
environmental engineer food web energy pyramid rule of 10
genetic variation adaptation limiting factors carrying capacity
genetic variation succession population growth population density
density dependent factor density independent bioaccumulation biomagnification
pioneer species climax community rethink reduce
reuse/repair recycle sustainability conservation
why is there a polar bear at the top of this page?

Explanation:

The polar bear is likely included to represent the impact of climate change (a key term in the vocabulary list), as polar bears are highly affected by melting ice in the Arctic due to global warming, a central environmental science concept related to the listed terms (e.g., greenhouse effect, climate change, sustainability).

Answer:

The polar bear is at the top to symbolize the impact of climate change (a vocabulary term here), as polar bears’ habitats (Arctic ice) are threatened by global warming, which ties to concepts like greenhouse effect, climate change, and sustainability in environmental science.