True or false : gas exchange in jellyfish is diffusion of CO2 and emission of O2
true or false: jellyfish have a complex nervous system

What re the two main phrases of the cell cycle.

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

18. which statement about cancer is true?