Final answer:
The best unit for the height of a tree is meters, and for the distance from New York to Michigan, it is kilometers or miles.
Step-by-step explanation:
For measuring the height of a tree, the best metric unit is the meter, as it provides a practical and efficient scale for objects that can range from a few to several meters in height. Trees are typically not as small as centimeters, nor as large as kilometers, making meters the most suitable choice.
As for the distance from New York to Michigan, the distance is substantial and spans across multiple states. Therefore, the appropriate unit of measurement would be kilometers or miles (if using customary units). Kilometers are suitable for measuring long distances, which in this case would fall into the hundreds or even over a thousand kilometers.
Remember, when selecting measurement units, it's essential to consider the object's size and use a unit of measurement that provides an easy, comprehensible, and useful number value.