Practice AP Environmental Science questions on hydrogen fuel cells, carbon dioxide, energy inputs, technology costs, and environmental impact.
The diagram shows the movement of one adult manatee over a 12 -hour period across an active shipping channel during the winter. Manatees are large, aquatic, herbivorous mammals that primarily eat seagrass. Manatees can travel several miles to graze. Manatees mature slowly, have low biotic potential, and inhabit warm coastal waters. They cannot survive in water below 20°C for extended periods of time.
\section*{Satellite Track and Water Temperature Log of the Movement of One Adult Manatee Over a 12-Hour Period}
Key Urban land Bay water Seagrass beds
Water Temperature - 13-19°C □ 20-23°C
Describe a potential disadvantage of using hydrogen fuel cells to power automobiles.
Begin your response to this question at the top of a new page in the separate Free Response booklet and fill in the appropriate circle at the top of each page to indicate the question number.