me ajuda a responder hoje deveres das férias 7º anos em inglês complete para exercício a fechado do uso da decalque complete corretamente

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.

Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock

The desert expands by hundreds of square miles each year.