Answer:
An index fossil is also known as guide fossils or indicator fossil. They are fossils used to determine and identify geologic periods.
The main characteristics of an index fossil include :
1.It must be distinctive.
2.It must be widespread.
3. It must be abundant
4. It must be limited in geologic time.
Due to trends and studies of most fossil-bearing rocks being formed in the ocean, the major index fossils are mostly marine animal or plant organisms.
The client is experiencing hyper arousal. In addition, hyper arousal is a precise gathering of post-traumatic stress disorder or as called as PTSD indications that some people with PTSD involvement. As the name implies, hyper arousal is the result of heightened anxiety and changed arousal reactions and comprises indications such as having a tough time falling or remaining asleep.
Explanation:
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness.
