Some freshwater animals have adapted flame cells, watery urine production, and salt pumps to prevent Question 17 options:

homeostasis.

ammonia removal.

oxygen exchange.

excess water from entering their bodies.

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.