Which of the following best defines soil texture?
a. amount of nutrients in the soil
b. depth of the soil
c. a measure of how developed a soil is
d. the relative amounts of sand, silt, and clay particles

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.