A disadvantage of being multi-cellular is how long it takes to reproduce. For single-celled organisms, it's sometimes as simple a splitting in two, but multi cellular organisms, like humans, have to wait 9 months until they see their child.
Another disadvantage is it take more energy to do things. Some bacteria have flagella that they move like a tail that drives them forward. Multi-cellular organisms have to intake calories that are burned when we move and we have to keep intaking them to perform tasks.
Electrons, protons, neutrons, electron shells
The true statements are: 1, 3, 4, 5, and 6
The food group is fats (sweets and oils)
Depends on the type of energy. If it is biological energy the answer would be yes since it comes from the sun