Answer:
Abrasion
Explanation:
Mechanical weathering is generally called physical weathering where rocks are broken down physically. It means that the rocks are broken down into smaller pieces but the rocks' composition (chemically) is not changed.
There are different ways that rocks can be broken into smaller pieces physically and gravity helps can also cause it.
Abrasion is an example of mechanical weathering where rocks bump into each other and cause the rocks to breakdown because of the force of bumping into each other. Gravity plays a role when it comes to rocks on the mountain side.
When a rock on top tumbles down the side of the mountain, it bumps into other rocks along the way. Gravity is at play here because it pulls the rock downwards, causing it to tumble.
Answer:
Ducks have no preference for white or wheat bread
Explanation:
The null hypothesis is the statement of no change (default). It proposes no relationship between the variables of the phenomenon under investigation. This hypothesis is usually considered to be true until proven otherwise by the experiment. It is designated as H0 and, if proven wrong, the alternative hypothesis (HA), is adopted.
If the water cycle were to stop, lakes, rivers and groundwater sources would dry up, glaciers would disappear and precipitation would stop falling. All freshwater resources would be negatively impacted, and life on Earth would completely cease. The lack of freshwater would make it impossible to grow food.
Hope this helps!!!
