Choose all the answers that apply. which of the following minerals can be scratched with a fingernail?
-talc
-diamond
-topaz
-quartz

The answer is Talc, it can be scrached with a finger nail, all the others are harder than a fingernail

Don't know all of them, but i do believe talc is an option.

The correct answer is d

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11