What are three types of plate boundaries?

Adesert is an example of a(n) and the gobi desert is an example of a(n) a. ecosystem biome b. biome ecosystem c. ecosystem climate d. climate biome

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?

Which of the following can scientists estimate geologic time? a.observing rock sequences b.radiometric dating c.comparing fossils d.all of these