How do humans use their genes to produce more than 22,000 proteins?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area