Which term defines a star system with two stars?

binary star system
eclipse star system
open cluster star system
globular cluster star system

What claim did thorne make? what evidence supported his claim?

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

If your blood becomes too concentrated with iona, what will happen to the red blood cells