The order from the longest to the largest will be; Eon, Era, Period, Epoch.
Eon is the longest division of geologic time. Epoch is the shortest division of geologic time, only present in Cenozoic Era. Era is the second longest division of time, marked by sweeping changes in the fossil record. Period is the time division which is longer than an epoch but shorter than an Era.
Answer:
Atmosphere layers. Earth's atmosphere is divided into five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere. The atmosphere thins out in each higher layer until the gases dissipate in space.
Explanation:
The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.
Spiral Galaxy... This is the answer...
There are lots of exact measuring systems we use in science. Here are just a few measurement words you may find in chemistry and science
° Liter - Metric unit for measuring volume
° Gram - Metric unit for measuring mass
° Meter - Metric unit for measuring length
° Ruler, meter stick, tape measure - Tools used to measure length
° Thermometer - Tool used to measure temperature
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