One characteristic used to place organisms into kingdoms is

One characteristic could be the structure of their nucleus. they could be classified as prokaryotes, which would include bacteria and most single-celled organisms. or, they could be classified as eukaryotes, which would include most multi-celled organisms. another characteristic would be there ability to make food. like plants, they can make their own food through photosynthesis, but consumers, like you and i, would have to get our food from these plants, fungi, or other animals. 

Why the planet stays in orbit is because of inertia (object stays in motion until a force changes it’s motion) also the atmosphere and gravity!

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.