Plant and animal cells both undergo mitotic cell divisions. Their main difference is how they form the daughter cells during cytokinesis. During that stage, animal cells form furrow or cleavage that gives way to formation of daughter cells. Due to the existence of the rigid cell wall, plant cells don't form furrows
meteorites are composed of the original material from which earth was formed. Their compositions range from metallic meteorites made of iron and nickel to stony meteorites composed of dense rock like peridotite
There should be less bacteria if you are growing it on a petting dish