What's the answer to this question? The light propagates in a straight line and a shadow is formed behind the opaque bodies. This property of light explains:
1. The change of seasons
2. Solar and lunar eclipses
3. Why the moon shines
4. phases of the moon

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.

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?