Which of the following are not biotic or abiotic factors in an ecosystem? A. Water and air
B. Rocks and energy
C. Plants and animals
D. Cultural components

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.

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.