Science, technology, and changes in society.
If the population do not or can not conform to the normalities of that society.
Ecosystems
I think it's because of the growth of the human population. I was confused with extinction at first, but in a larger part the answer might be the growth of the human population.
Ecosystems
it impact by the pollution that is burning cars buses may affect population and they might die ..
Reduced Resources
growth in population
keeping a population check...even in rural areas.people should be made aware of the pros and cons of the increasing population.And letting them know that how population growth is going to effect them in long run...this might contribute in minimize the population growth.
What chemical might cause the yeast population to enter the death phase?
This is a somewhat vague question as there are possibly many ways negative population growth can affect the people, if considered in a closed system such as a continent, race, or globally negative population growth will ultimately lead to no people :D If i don't stretch your question i'll assume by "the people" you mean the people in the population. I make this distinction because there are many populations of people apart from each other, for example the population of one city compared to the population of another. A state population, country population, continent, or global population. Perhaps even a race population. But with my prior assumption that "the people" refers to the people in a specific population, i would think that a negative population growth rate would effect it's people in a number of ways, ranging from efforts made to identify the cause of negative population growth to efforts in attending to these causes as to prevent the population from reaching too few in number to sustain itself. I realize this answer is vague, but i think your question needs some reworking if you are looking for a specific answer. Negative population growth in a region that is considered "overpopulated" might positively effect the people, and vice versa in the case where a population is already dwindling to a number that would be considered threatening to the continued existence of a population. If we look at the global population, throughout our history there are examples and obstacles that have lead to the growth of population, and cities and countries are somewhat measured in greatness by their population so in those terms a growing population would be considered healthy or prosperous whereas a negative population growth would be indicative of a country or society that is doing poorly. I think its important to emphasize the population growth rate is a measure of population growth divided by a time period. This is different from an overall population. That being said the effects of a negative population growth rate are somewhat dependent on the overall population at a specific time.
Your prolactin level might be too high
Lack of growth hormone may cause dwarfism. Growth hormone is essential for stimulating growth in childhood and overall development. Deficiency in growth hormone can lead to stunted growth and a condition known as dwarfism.