What is the role of gills?

a. to pump blood

b. to bring oxygen into the animal

c. to break up food

d. to be a body cavity

Which muscle of the quadriceps femoris originates on the highlighted structure?

The angle of rotation the letter S have. A. 0° B. 90° C. 120° D. 180°

Samantha is equally attracted to men and to women and has sexual relations with both. she would be identified as: select one: a. a lesbian. b. bi-gay. c. bi-straight.

Which carbon isotope has 6 electrons, 6 protons, and 7 neutrons? A. nonradioactive 12C B. nonradioactive 13C C. radioactive 14C

28. True or false: Ground beef labeled "75 percent lean" is a good choice, since only 25 percent of its calories come from fat.

After several miles of running and sprinting in intervals, the runner's muscles ache and feel fatigued. Which is the best explanation for what has occurred?

Which piece of lab equipment is used to measure the mass of a chemical sample?

9. What are the major differences between P and S waves from an earthquake and which instrument do scientists use to measure these waves?

Part 1: Universal solvent Describe what happens in each beaker.

What will likely happen to the body if the joints are stiff, infected or not functioning as expected?