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.
What do you need examples of?
Calcium
Vitamin D
Vitamin K
Phosphorus
vitamin C
<span>Parasympathetic nervous system
</span><span>
The nervous system has three general functions: a sensory function, an interpretative function and a motor function. 1. Sensory nerves gather information from inside the body and the outside environment. The nerves then carry the information to the central nervous system (CNS). 2. Sensory information brought to the CNS is processed and interpreted. 3. Motor nerve cells convey information from the CNS to the muscles and glands of the body. The nervous system is responsible for coordinating all of the body's activities.</span>
Answer:
there are not 7 steps of primary succesion and they only have 4 steps.
Explanation:
The complete process of a primary autotrophic ecological succession involves the following sequential steps, which follow one another:
Nudation:
Invasion:
Competition and reaction:
Stabilization or climax:
