Unlike identical twins, fraternal twins
a. result from the same fertilized egg.
b. are always the same sex.
c. result from two eggs fertilized by different sperm.
d. are produced from two identical embryos.

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box