When the seeds land on suitable ground with favourable conditions, they will disperse
and grow. Seeds require
???
in the air,
?
and
???
or suitable temperature for germination to take place.

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.