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so, a frog has 2 layers of skin and what do you use to separate the skin from the muscle?
frog
Terrariun
Hand lens
It is a scissor and a scalpel because you have to cut it up.
selection tool for selecting total object direct selection tool for selecting separate points in object.
You go for CAT scan for study of bones and you go for MRI for study of organs.
There are drills that operate by muscle power, but most current hand drills are powered by electricity.
a Polyacrylamide gel
A model is a representation of a project or idea. A tool is something that is used to build something. In the strictest sense a model can be a tool and a tool can be a model, but generally, the two are separate.
A prism
grater