Answer:
When acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves.
Explanation:
Groundwater causes erosion through hydraulic action and solution, leading to the formation of unique landforms.
Groundwater can cause erosion and deposition through two main processes: hydraulic action and solution.
ydraulic action occurs when the force of moving groundwater dislodges and carries away the particles of soil and rock. This can create channels and cavities, causing erosion.
Solution happens when groundwater dissolves certain minerals and rocks, such as limestone, leaving behind deposits.
For example, when groundwater flows through a limestone cave, it can dissolve the rock, leading to the formation of stalactites and stalagmites.
These are formed through the deposition of dissolved minerals from the water.
In summary, groundwater can erode and deposit material through hydraulic action and solution, shaping the landscape and creating unique landforms.
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B. Drought
C. Volcanic Eruption
D. Flood
Ecosystems may be significantly impacted by human activity. Farming is one instance of how human activity affects the environment. Thus, the correct answer to this question is option (A).
Ecosystems may be significantly impacted by human activity. Ecosystems may be changed by human activities including farming, building, mining, hunting, and fishing.
So, farming is an illustration of how humans affect ecosystems.
Therefore, Farming is one instance of how human activity affects the environment. Thus, the correct answer to this question is option (A).
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b. thickness of rock layers.
c. fossil tree rings.
d. plant pollens.
Clues to what ancient climates were like come from all of the following except thickness of rock layers. The right answer is b.
The thickness of rock layers primarily provides clues about the geological history of an area, including the sequence of events and the types of rocks deposited over time. While it may indirectly provide some information about the ancient environment in which those rocks formed, it is not a direct source of information about ancient climates. Ice cores from glaciers or ice sheets can provide a wealth of data about past climate conditions, including temperature, atmospheric composition, and even evidence of past volcanic events.
Fossil tree rings can reveal information about past climate patterns, such as temperature variations and precipitation levels, by analyzing growth rings in trees that lived in ancient times. Plant pollens preserved in sediment layers can provide insights into past vegetation and climate conditions, as different plant species are associated with specific climatic conditions.
The correct answer is option b.
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B. The United States has a parliamentary system that holds general elections every four years.
C. The United States has a cabinet system that advises the prime minister on national issues.
tes has a federal government that handles national affairs and states that have their
own governments.
Answer:
The answer is Option D. The United States has a federal government that handles national affairs and states that have their own governments.
Explanation:
The United States has a presidential government system, whereas other countries like England have a parliamentary system. In a presidential system, the people choose the executive leader (the President) directly. In a parliamentary system, people vote for the party and technically it is the legislators who are a member of that party who chose their leader. So, in a parliamentary system voters do not select the leader directly like in a presidential system. The United States is also a federal system where power is shared in the national system and the individual states.
Answer:
D
Explanation:
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