3. Identify the source of alpha particle in Rutherford scattering experiment? a. Hydrogen Nucleus b. Argon Nucleus c. Helium Nucleus d. None of these

4. is not a green house gas.

a. Methane b. Carbon-dioxide c. Helium Nucleus d. None of these

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

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

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.