Islands plains and mountains are examples of what?

Why is the future for life on earth bleak?

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

¿qué parte de la patagonia está en peligro de exinción por su sobrepesca?