Answer:C: reproduce
They affect how likely an organism is to survive and
reproduce
Explanation:
They usually have Broad Leaves
I hope this helps!
A bullfrog can blow its self to scary enemies and if the predator still goes for the frog he has poisons gases on his skin that are like you eating the hottest pepper.
The correct answer is - D) covered by warm shallow seas.
The fact that the crinoids are have an abundance in the fossil records in Pennsylvania in the Mississippian Period, tells us that this area was covered with shallow and warm seas. The reason why we can get that conclusion is that the crinoids live only in that kind of environment, so it simply a logical conclusion.
The geological data is also confirming this, as it is easily noticeable in the layers that during this period of the geologic past, what is now Pennsylvania, was covered with shallow sea waters. Also, this waters were warm too, as the climate was warm and humid and that period, so it was a perfect environment for the crinoids to flourish.