All of the following are true about your opponents except:
a. opponents in any game are not enemies.
b. opponents in sports are temporary challengers.
c. opponents who hold grudges make better competitors.
d. opponents who keep grudges are engaged in an unhealthy behavior.

They are all true except c.

Opponents who hold grudges are not better competitors. They are letting the game become way too personal and this will cloud their judgement and ability to make rational decisions when playing. It will become a grudge match which is not sportsmanlike.

the plates spread at mid-ocean ridges (they are divergent plate boundaries) which allows magma to rise through the weakness between the plates. the magma then emerges as lava from the boundary and cools, creating a new crust.

when i got mine it was about a 6 or 7