Farmer fran sprays her sugarcane field with a highly effective pesticide called 'bayou bug blast'. for five years the pesticide works without a hitch, effectively killing almost all of the bayou weevils trying to eat farmer fran's crop. however, during the 6th year, some of the crop takes a hit. during the 7th year, she loses half of her crop, and during the 8th year, she loses almost the entire cane field to bayou weevils, despite using twice the usual dose of bayou bug blast. what happened?

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas