Superposition is used to assign relative ages to rock layers, the newer layers on the bottom and the oldest layers on the top.

In general in which direction does wind blow

Which experiment would most likely contain experimental bias

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia