Which of the following can be considered an Ecosystem Service? The seasonal spawning of Salmon upriver

A beaver building a dam in a streambed

Plants converting atmospheric carbon dioxide into oxygen

A rockslide creating a new path down a mountain

#4.) describe the most likely weather conditions at indiana / ohio boarder. also could someone double check my other answers? i'd really appreciate it

Describe at least three examples of how people and wildlife have adapted to their environments in the middle east.

This map shows the member states of the european union (eu). based on this map, what is the most likely reason the eu was formed? a) to increase trade between european nations b) to protect themselves from foreign enemies c) to begin the process of forming one large nation d) to isolate europe from the rest of the international community j