How do you make a model of a capillary

Models are non-visual ways of coummincating how someone thinks about something in the natural world

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

What are the possible blood types among the children of parents that are ab and ii? oa) types a and b ob) types a, b, and ab c) types a, b, and o od) types a, b, ab, and o