Answer:
Explanation:
More than 99 percent of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant. At least a handful of times in the last 500 million years, 75 to more than 90 percent of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass extinctions.
Though mass extinctions are deadly events, they open up the planet for new forms of life to emerge. The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for mammals and birds to rapidly diversify and evolve.
Answer:
focus on studying, that means they want you to be studying more than anything else, maybe even do advance studying by yourself. Do some chores as well :D when ur old enough like 15 - 16, get a partime job to help your parents. but if it effect your studyin, just focus on your studying
So is the conjunction that links the two independent clauses. Answer: So
Its C because adverbs usually end with -ly
:}
