What is the name of the outermost layer that forms a boundary around the outside of a cell?

4.explain how these geological processes and interactions have changed earth's surface through the years. be sure to use evidence to support your answer • earthquakes • faults • ocean formation • mountains • volcanoes • island chains • seafloor spreading

Explain how this example of pesticide resisitance in ticks is an example of biological evolution

Why does sexual reproduction increase the genetic variation in a species? a. sexual reproduction doubles the chromosome number. b. sexual reproduction produces organisms with no dna. c. the gametes in sexual reproduction are exact clones of the parents. d. a fertilized egg has a mixture of alleles from the two parents.