What type of metamorphic rock is formed from only pressure like the crayon shavings?

a. non-foliated metamorphic rock

b. foliated metamorphic rock

c. extrusive rock

d. clastic rock

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

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?