Weathering and erosion played a big role in forming the grand canyon. The rock was being weathered, most likely mechanical weathering, and then it eroded away. Think of a pebble that is in running water. When you pick it up, it is smooth, right. But before, it was pointy. So, the grand canyon was once a big rock, and weathering broke through it making it one of the wonders of the USA.
<span>people with an impulsive personality have a higher rate of substance abuse and dependence.</span>
Answer:
C. Double helix
Explanation:
The twisted ladder shape that DNA has can also be called a double helix.
It is in the shape of a helix, which is similar to a 3D spiral shape.
It is called a double helix because DNA is made up of two DNA helix strands that are intertwined.
So, C is the correct answer.
Answer:
Examples of ecosystem services include products such as food and water, regulation of floods, soil erosion and disease outbreaks, and non-material benefits such as recreational and spiritual benefits in natural areas.
