Can someone show me the formula for this? And help explain a little bit please? No links please I cannot open them :)

Summarize the work of famous environmental scientists of the past.

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Your data will you choose that you can use in your planning. a. evidence-based practices b. strategies others have used c. new and innovative strategies d. strategies recommended by family members