The United States Artic National Wildlife Refuge is a large portion of Alaska that is protected from construction which would affect the land and resources that are available to living things. Which term is used to describe all the species that live in the Arctic National Wildlife Refuge?

Explain how scientists use geologic time to determine the age of landforms.

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic