Which of the following is true of the cerebral hemispheres of the human brain? -the cerebral hemispheres account for about 83% of total brain mass.-nearly the entire surface of the cerebral hemispheres is marked by elevated ridges called the entire surface of the cerebral hemispheres is marked by shallow grooves called gyri. the longitudinal fissure separates the cerebral hemispheres from the cerebellum.

Lymphatic vessels remove excess fluid from tissues. often after mammexront( the surgical procedure to remove of all or part of a breast) the lymphatic vessels draining the arm are damaged. explain a consequence of this damage. what can be done to reduce the symptoms?

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

(amoeba sisters video recap: pedigrees and need