Answer:
Instead of drawing one hair at a time, think about the shape a __group___ of hairs make when clumped together. When sketching keep in mind the __egg_ shape roundness of the head. Start off by drawing _loose_ hairs around the face. Always try to break complex things into _simple_ shapes. blend your lines as the hair would softly bend around the _sphere_ of the head.
Explanation:
1) Well, models are vital to use by scientists, because that way they can represent visually and help other people understand the point they are trying to stress about their project. A simple example would be to use a Bohr model to represent a specific chemical, and along with that show how many protons or neutrons does it have.
2)In science a universal law is a statement by which a particular action or a phenomenon would occur ALWAYS in the same way, and will ALWAYS abide to what the law states, while a theory is a guess on what kind of pattern does a particular phenomenon or experiment abide by.
3)The SI units are units of the metric system, and are used everywhere in the world for specific measurements, the kilograms is used when measuring mass, the meters is used when measuring length, the liter is used when measuring a volume of a liquid, and finally the cubic meters or m3 are used when measuring the volume of a solid. and those are the standards as well.
Soldier battle is the answer that I think it is