1
Someone who investigates to reach a new conclusion
2
Layer of gases sorrounding the earth
3
A biological community of interacting organisms
4
An exceptional large ocean wave
5
The atmosphere´s state
6
The weather conditions prevailing in an area
7
Used to prevent diseases
8
Put forward an idea or plan
9
A long period without rain
10
Someone who competes against another
11
A formal discussion on a particular topic
12
An overflowing of a large amount of water
