In a nuclear accident such as occurred at Chernobyl, the long-term biological damage is caused by
A) nuclear fusion occurring within the biological cells.
B) the thermal energy produced by radioactive decay within biological cells.
C) alpha, beta, and gamma particles passing through biological cells.
D) nuclear fission occurring within the biological cells.
E) the high energy vibrations of the water molecule that are caused by radioactive isotopes.
Question 2
A ball tossed vertically upward reaches its highest point and then falls back to its starting point. During this up-and-down motion the acceleration of the ball is always
A) in the direction of motion.
B) opposite its velocity.
C) directed upward.
D) directed downward.
Deformation in human bones caused by (a) rickets and (b) osteoporosis.
Local and long–distance cell communication in animals.
Notice the reddish-brown haze caused by nitrogen oxides that is often over many major cities.
Full-term Twin
Each chromosome consists of a single, long molecule of DNA within which are the sequences of individ