The Tigris and the Euphrates
Answer:
From the Silurain to Devonian period
Explanation:
Diversification of fish began during the Silurian period continued during the Devonian Period. The lobe-finned fishes first appeared during the Silurian.
Answer:
elements
Explanation:
Maps have several important elements, or features. These features are the tools the map uses to convey information.
The answer is overpopulasion