How did giraffes get their neck so long

Peristalsis is characteristic of skeletal muscle involving a contraction and relaxation of opposing layers of smooth muscle cells. (A) True (B) False

When non nerve cells become invoved in response to signals whitch tipe of receptor gose into action

The nurse is caring for a patient who has lymphatic obstruction. which complication does the nurse monitor for in the patient?

Compare temperature and pressure conditions at Earth's surface and below Earth's surface, and relate them to the process of lithification.

What is conservation of energy

Of the millions of sperm who start the long journey to the egg, how many sperm are actually allowed to enter the egg?

A mineral leaves a gray trail when scraped against an unglazed porcelain plate. Which property of a mineral is being measured? A. luster B. streak C. color D. hardness

Which two systems in the human body are devoted exclusively to the regulation of organ function?

A 40-year-old man reports to his health care provider complaining of "heartburn" that occurs after eating and also wakens him at night.

What do Meg and Charles Wallace have in common? a. They both like to be "exclusive." B. They both are called "not quite bright." C. They both have IQs that are "more than okay." D. They both are described as "new."