Ra. te me ppls
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Amountain created from tectonic activity would be considered which type of landform ? a) primary landform b) secondary landform

How does central place theory explain patterns in the size and distribution of cities?

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