Answer:
Scientists use the geologic time scale to illustrate the order in which events on Earth have happened.
Answer:
b) Human Development Index
<h2>Answer:</h2>
Robin Redbreast is the Michigan State Bird
<h2>Explanation:</h2>
Michigan designated "robin redbreast" which is also called American robin as the official state bird in 1931 after an election held by the Michigan Audubon Society. The American robin has many rich songs composed of long phrases such as "whinny" and "tut" calls. This bird eats worms, seeds, fruits, insects and other invertebrates.