A zero gravity chamber simulates the weightlessness that astronauts experience in space. Which of the following will most likely happen to a person inside a zero gravity chamber? A. The person will feel energetic because the heart rate will increase.
B. The heart rate will slow down because the blood vessels will have less blood to circulate.
C. The person will feel dizzy because the heart will pump less blood per beat.
D. The heart will pump less blood per beat because the blood vessels will have less blood to circulate.

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.

Explain the significance of meiosis in sexual reproduction