A scientist wants to study primary succession. After which ecological event should she begin her research? Choose the correct answer.
A. A retreating glacier exposes bare rock.
B. A fire burns down half of a forest.
C. A hurricane devastates a coral reef.
D. A loss of a tree creates a gap in the forest canopy

Which statement most strongly develops a positive tone? a. i was happy when i received my first paycheck for my hand work. b. winter break is approaching quickly, and i cannot wait to go shopping for gifts. c. going to the beach is one of my favorite activities; i love surfing and paddle boarding. d. a sense of accomplishment overwhelmed me as i stepped into into the stage that sunny, glorious day of graduation.