Which of the following characteristics put species at special risk of extinction?
a) small local populations
b) high genetic diversity
c) small geographic range
d) a and b
e) a and c

a & c.

Explanation:

small local populations depend on a specific food source. If the food source is depleted because of the existing populus, chances are, there will be no reproduction. If the populus, does not look beyond their boundaries for food, the species will die.

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

the answer is c) abandoned properties that are contaminated with hazardous materials.