Will upvote:
which of the following is true of compasses?
a compass is a permanent magnet.
a compass has only a north pole.
compasses always point toward geographic south.
compasses are not always magnetized.

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

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

If animal agriculture was eliminated, how much grain would become available for human consumption?