11. When did surfing begin (p.51)?

Which event would lead to primary succession of a forest?

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2