Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice. There are two types of weathering: mechanical and chemical.
Fruit flies produce offspring relatively fast and have specific traits, such as eye color and body color/shape. They are easy to observe and their traits are easily traced throughout the next generations.
a scale-model mound made of the same materials that make the real hill
The Answer is B, or the 2nd one since it starts from one cell and splits into 2 meaning it's under going mitosis.
Sea level - 100%
mid-level elevation - 4500M and 57%
Peak - 8850M and 33%
