Why do you think species become extinct?

Match the scientist with the correct statement. 1. astronomer "Sea otters are on the endangered species list due to over-hunting for their beautiful fur." 2. geologist "A dinosaur mummy was found with much of its tissues and bones still encased!" 3.

Organs, such as the stomach and the small and large intestines, are lined with smooth muscle tissue. These organs, due to the muscular contractions of their walls, involuntarily A) grind food into smaller pieces.

Describe some other kinds of activities that would benefit the most from each molecule in the table.

Codominant traits in humans

What is a "pregnancy substitute"? why would someone take one?

A cladogram is shown below. Based on the cladogram, which two species share the most recent common ancestor? A. owl and salmon B. lizard and owl C. salmon and rat D. rat and toad

The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein.

Where is the moving electric field that causes Earth's magnetic field? A.) earth surface B.) in space C.) earth mantel D.) earth core

Cost minimization is an appropriate strategy in which stage of the product life cycle? a. introduction b. growth c. adolescence d. decline e. retirement

How can a kidney transplant be carried out?