1) Why do scientists use models? A) Models are unreliable.
B) Models waste natural resources.
C) Models predict not just describe events.
D) Models are based on scientific laws and principals so they are more
reliable than the real thing.

Which of the following typically characterizes a tropical rainforests

What must be done to breed dogs for a partical trait

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.