The supercontinent was around how many years ago?

Give three differences between oceanic and continental crust brainliest will be awarded

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?

The us labor movement began in the a. 1930s b. 1920s c. 1880s d. 1860s select the best answer from the choices provided. a b c d