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.
19 is preterite. 20 is imperfect. 21 is conditional.
Yes it is because that is an action, in spanish too
I don’t know exactly understand the question but it means “family is very big. We are eight people. And you, is it big
enter answer
family?” So it doesn’t make much sense