Answer:
The placement of fossils throughout the surface layers of Earth made the geologists decide where one division of the geologic time scale ends and the next begins.
Explanation:
Fossils play a major role in identifying or deciding the geologic time scale eras or eons. Fossils are the only evidence in the form of specimen remains like bones, leaves, shells, teeth, or burrows, tracks etc all of which provide information about life on Earth during a particular time.
Fossil placement on earth’s surface creates fossil records. On the earth’s surface like rocks, a younger fossil will be buried on a layer above the older fossil layer. Each layer will represent a unique life form that existed during a time period and determines the division of geologic time scale.
In fact each of the eras like Paleozoic, Mesozoic, or Cenozoic ends with the suffix zoic since the time change of these eras is based on the evolution of animal life during that period
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Answer:
Explanation:
To produce inspiration, the floor of the mouth is depressed, causing air to be drawn into the buccal cavity through the nostrils. The nostrils are then closed, and the floor of the mouth is elevated. This creates a positive pressure in the mouth cavity and drives air into the lungs through the open glottis.
Auxins promote cell elongation and cell division in stems.
It will be Control. Part of the experiment used to show that the results of an experiment is really due to the conditions being tested.
