3. Species that can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions. (16 Points) niche habitat generalists species keystone

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."