Darwinian Snails

In this biology worksheet, 9th graders describe the population of snails by determining how many shell thicknesses there are. Then they use the graph illustrated to determine whether it is possible that snails with very thin shells and very thick shells could arise in the same rocky shoreline population.

9th Science 4 Views 12 Downloads
Resource Details

4 more...
Resource Types
3 more...

What Members Say

Desiree B.
Lesson Planet has made my planning and my teaching stress free...
Desiree B., Teacher