Tropical rain-forests is a <span>biome in north America having the highest biodiversity.
Biodiversity means that there is a variation in the species of animals and plants that exist in a certain biome. A bio-diverse biome or ecosystem is one that supports or has a variety in these species.</span>
Contacts between sedentary and nomad peoples<span> resulted in trade, tribute payments</span>
Answer:
The Crust is mostly made up of loose materials.
The Mantle is made of up of a thick solid rock substance.
The Outer Core is made of super heated liquid molten lava.
The Inner Core is believed to be solid ball of mostly iron, and nickel.
Explanation:
Answer:
wear a lab apron and safety goggles
