What event might occur when favorable adaptations build up in a population over many generations?

starvation
extinction
migration
speciation

Look at the photo of the leaf. which term best describes this leaf?

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

Number and variety of living organism; includes genetic, species, and ecological types