Answer:
This type of mechanical weathering breaks apart rocks and other materials using the expansion of freezing water. Water seeps into small cracks in a rock where it freezes, expands and causes the crack to widen.
Explanation:
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The effect of the environmental change is that the number of monarch butterflies will decrease because their caterpillars will not have enough food.
From the information given, it was stated that an environmental change reduced the population of milkweed plants in an area.
Since the milkweed plants provided the only source of food for a nearby population of monarch butterfly caterpillars, the number of monarch butterflies will decrease.
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The federal government has established safety guidelines with the
National Highway Safety Act
More about the National Highway Safety Act:
In order to give the federal government the authority to establish and enforce new safety regulations for cars and other motorised vehicles, the National Traffic and Motor Vehicle Safety Act was passed in the United States in 1966.
The Act established the first federally mandated motor vehicle safety requirements. The National Highway Safety Bureau was established by the Act (now National Highway Traffic Safety Administration).
Following a time in which the number of people killed on the road had climbed 6-fold and the number of vehicles was up 11-fold since 1925, the government took a variety of steps, including the Act, to address the growing number of cars and accompanying fatalities and injuries on the road.
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