How do mindy’s skeletal and muscular systems work together to her run?

Which are forms of nitrogen that are usable by humans

If vegetable oil is made out of veggies, then what is baby oil made out of?

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.