Explanation:
Fertility, mortality and migration are principal determinants of population growth. Population change depends on the natural increase changes seen in birth rates and the change seen in migration. Changes in population size can be predicted based on changes in fertility (births), mortality (deaths) and migration rates.
Southern regions, closer to the border.
The correct answer is endorphins.
During strenuous exercise, the brain releases the neurotransmitter called endorphins. Endorphins are known as "feel good" chemicals that produce a feeling of euphoria, reduce anxiety and the ability to experience pain. Endorphins also produce a feeling of happiness and relaxation after an intense exercise session.
I believe the answer is: D. performing charitable work for the African American community
United Negro Improvement Association was created in order to improve the quality of lives for African American citizens in united states, which might be stunted due to having to face centuries of slavery, racial segregation, and years of racial discrimination.
One of their main program is providing poor African American students with scholarship to pursue their education.
