I don't get this. Sterling has prepared the following two-column proof below. He is given that ∠OLN ≅ ∠LNO and he is trying to prove that OL ≅ ON.

Triangle OLN, where angle OLN is congruent to angle LNO
Step Statement Reason
1 ∠OLN ≅ ∠LNO: Given
2 Draw OE as a perpendicular bisector to LN: by Construction
3 m∠LEO = 90°: Definition of a Perpendicular Bisector
4 m∠NEO = 90°: Definition of a Perpendicular Bisector
5 LE ≅ EN: Definition of a Perpendicular Bisector
6 ΔOLE ≅ ΔONE: Hypotenuse-Leg (HL) Postulate
7 ∠LEO ≅ ∠NEO: Transitive Property of Equality
8 OL ≅ ON: CPCTC
Sterling made two errors in the proof. Identify and correct the errors. (10 points)

Answer is in the photo. I can't attach it here, but I've uploaded it to a file hosting. link below! Good Luck!

cutt.ly/Kzv78uJ

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

its an acute right triangle

step-by-step explanation: