Which of the following statements about extinction is true? A) Extinction is the ultimate fate of all species.
B) Extinction can occur in a small area.
C) Extinction can be caused by the introduction of exotic species.
D) All of the above

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation