Cells can be observed using light or electron microscopes. outline the differences between light and electron microscopes and discuss the pros and cons of the electric microscope.

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

Match the description of each organism to the appropriate category