Can someone check my answers for my three questions? i will fan and will also give a medal.

1) which of the following is most likely to be an observation made by an anatomist?

a) blood is made up of cells suspended in a fluid extracellular matrix.

b) cartilage provides support and protection for developing bones.

c) the heart has a protective outer covering that produces serous fluid.

d) specialized cells in the epidermis produce the dark pigment known as melanin.

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

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a