1. C. "Drone Assistance"
2. D. without
3. B. to understand the environment
4. A. He is part of the penguin census team.
5. B. the census is difficult but important work.
6. A. chinstrap penguins nest on rocky slopes.
this question translates to:
How the sun clock works Why does the shadow help measure time?
I guess the answer would be this:
As the sun's position changes in our sky, the shadow it casts will align with lines marking each hour indicating the time of day
