How could you calculate the speed of a snail or cheetah?
Speed just takes distance and time into account. How might direction be
considered as well?

Eristics do scientists use to distinguish between organisms in different kingdoms

Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the