If a slowly running stream in the hydrosphere runs down off a mountain and passes over a plain, which of the following shows how the surface of the earth might change over a long period of time? a. a canyon will form b. a plateau will form c. there will be no change d. an ocean will form

What is the reason for the “scramble for africa”?

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

Heyi am new to are you all americans? ( just want to know , i don't mean any offence ) ?