Most of north africa and the middle east is desert how did this affect rhe settlement of the early ? need a answer niw

What is the famous rainforest in costa rica called?

What are the answers for the following questions?

What evidence supports geological processes changing the surface of the earth? cutting down forests creates a decrease of habitats. tectonic plates uplift the rocky crust of earth to form mountains. competition in ecosystems creates a decrease in diversity. pollution runoff contaminates a lake.