Question 4 of 10 occurs when sound waves apparently bend around an obstacle.
O A. A compression wave
B. The Doppler effect
O C. Diffraction
O D. An echo

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Chromosome 17 is made of over million base pairs.

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas