Era is used to mark the boundaries of geological time scale by using radio carbon dating technique.
Explanation:
Geological time starts with Precambrian time.
Geologically, time is divided between the Precambrian era and present time into era.
The three eras are Paleozoic era, Triassic period and Cenozoic era.
Era is further divided into periods.
Scientists use radio carbon dating to study fossils and rock formation. With this study they were able to divide them in exact geological scale.
Geologic scale is the record of events in earth's history and evolution.
Answer:
this is for the first image with the marshmallows in campfire-There are two main processes that heat a marshmallow: absorption of campfire radiation photons and contact with very hot air rising off the fire convection. If we place the marshmallow directly above the fire, we get both.
Answer:
D.Georgia to Alabama
Explanation:
There are records of manatee sighting during the summer months in areas such as Alabama, Georgia and South Carolina. They migrate north in the summer months.
The manatees do not withstand temperatures below 21 degrees Celsius.
Most manatees migrate seasonally over long distances between a northern warm season range.
In winter the manatees are concentrated in Florida.
