What are at least two major differences between eukaryotic and prokaryotic cells and one major similarity between the two?

How can you approximate the number of calories required to keep you in energy balance?

One of the reasons that stars are so large is because

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.