Which of the following are the three areas of the tundra biome? (Choose all that apply.) Arctic
Asian
Antarctic
alpine

Competition occurs between species when

How is the carbon cycle related to global warming ?

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.