C. Populations.
Hope that's right.
The answer is A. Heat flows from high to low. For example, when you put an ice cube in a hot drink, the heat from the drink goes to the ice cube, and that is why it melts.
Answer:
In most materials, as heat energy is absorbed, the density decreases. IF a certain object is heated, it might appear bigger than usual because it expands as the molecules inside moves faster than usual. However the mass of it stays the same while the density decreases.
Do you have multiple choice answers? the lower layers are generally older than the higher layers.
V=d/t
88 km/h = distance/ .75 h . multiply .75 by both side
66 km
Hope it helps
