Why is it plant cells have cell walls and animal cells do not?

Plant cells have cell walls around them, and animal cells don't have cell walls.The cell walls give plant cells their boxy shapes. ... That's nice for plants, because it gives them the ability to grow up and out, where they can get lots of sunlight for making their food

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.