What ecosystem factors decreases in responses to human activities that cause the ecosystem to be fragile?

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

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.