The hydrosphere is defined as which of the following? a).all water within the earth and on the earth. b).all water within the earth, on the earth, and in the atmosphere. c),all water on the earth and in the atmosphere. d).all water with the mantle, surface, and above the earth. e).all liquid water in the earth, on the earth, and in the atmosphere.

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

The normal shape of an enzyme is as shown in structure a. if the enzyme’s shape changes to that shown in structure b, what are two consequences of this change?

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated