Ependyma cells. These cells
that make up the neuroectodermal padding is responsible for the production of cerebral
spinal fluid. The cells are one type of neuroglia
cells of the central nervous system. The lining of ependyma cells of the brain also
plays a role in neuroregeneration.
Answer:
too few workers to support an aging population
Explanation:
According to nature, the cells reach a phase where most of the resources are exhausted in the body and aging kicks in. An increase in aging population would adversely affect the trend of population growth since most of these people are not able to work, look after themselves and therefore would require workers to look after them. When there are few worker to support the aging population, the population is affected because some of them die due to starvation and emerging diseases.
Answer: About 16 months to 4 years.
Explanation: Depending on the specific nursing program you enroll in. On average, becoming a registered nurse can take 3 years.
Coevolution occurs when two or more species reciprocally affect each others evolution. The two species in question exerts selective pressure on each other thereby affecting each others evolution. The relationships that might exist include mutualism, predator-prey relationship and host-parasite relationship.
All this gradually shape the two species due to adaptations for survival and competitions.
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