Which of these energy sources is formed from decayed and compressed plankton?
A. Natural gas
B. Biomass
C. Geothermal
D. Coal

b) mutualism

hope this : )

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

you need to stop taking that class