if you were to travel to a planet
that has twice the mass of earth,
what would happen to your
weight?
a. your weight would decrease due to less
gravity.
b. your mass would decrease since earth has less
mass.
c. your weight would decrease because the
gravity decreased.
d. your weight would increase because gravity is
greater.

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.