The law that states rock layers closest to the surface are the newest or youngest rock is
a. law of original horizontality
b. law of superposition
c. law of original lateral continuity
d. law of gravity and oppositional force
e. law of cross-cutting relationships

Which statement best explains how cellular respiration maintain homeostasis in animals? it maintains body temperature by absorbing energy. it breaks glucose into energy required by the organism. it speeds up metabolism by making oxygen. it produces energy from hormones present in the organism.

The rate at which molecules water and oxygen can enter a cell is determined by the-

Which of the following statements are true chromosomes make up genes