What happens first when a star begins to run out of fuel? The star’s core shrinks. The star becomes a black hole. The star becomes a white dwarf. The star’s outer layer drifts away.

What types of energy transfers and energy transportations are involved in the domino chain reaction?

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.

(amoeba sisters video recap: pedigrees and need