Calculate the total number of years that each of the geologic eras lasted, rounding to the nearest 100 million. Then, calculate each of these values as a percentage of the total 4.6 billion years of Earth's history. Round your answer to the units place.

6 or 2

explanation:

hope this you

but i think its 6

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth

a list of local governments in the us which go in order from the largest to the smallest division may be represented in the following way:

1. local government: it is placed below the level of state government as it refers to the jurisdiction government.

2. county government: states are organized into counties for administrative purposes.

3. township governments or municipalities: some counties are divided into towns or municipalities as population centers. cities, boroughs and villages are included at this level.

4. districts: special purpose districts encompass areas in municipalities.