Question

What did the 1980 Mount Saint Helens volcanic eruptions teach environmental scientists?

a. salvage logging was essential to protecting the area from fire and insect threats

b. many of the initial pioneering species actually survived the eruptions

c. seeding the slopes was necessary to prevent erosion

Answer 1

the first answer is the correct one 

Answer 2

The 1980 Mount Saint Helens volcanic eruptions teach environmental scientists that many of the initial pioneering species actually survived the eruptions.