Answer:
An alluvial fan is a triangle-shaped deposit of gravel, sand, and even smaller pieces of sediment, such as silt. This sediment is called alluvium. Alluvial fans are usually created as flowing water interacts with mountains, hills, or the steep walls of canyons.
Explanation:
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Answer:
unablity to provide all services for all people
greater poverty and lack of sanitation
greater air pollution with significant impact on human health
Answer:
<em>The correct option is theories. </em>
Explanation:
A scientific theory is a detailed explanation of natural researches which are supported through evidence. Scientific theories can be changed if other evidence are made which support another theory. Hence, scientific theories can change. The concepts of plate tectonics and evolution change overtime whenever new pieces of evidence are discovered. Hence, they are scientific theories.
Other options such as hypotheses are not correct because a hypothesis is just a tentative statement which can either be proved to be correct or wrong. Observations are not made on evidences hence the option observations is also not correct.
Answer:
1. Mining.
Mining affects the land by creating loss of biodiversity, sinkholes, mudslides and contamination. That’s just a few affects mining can have on the land.
2. Petroleum.
The main risk that happens when extracting petroleum are oil spills. Some of the worst oil spills in history have caused major fires, explosions, and contamination in the area where they are at. What’s worse is that innocent little animals get caught in those oil spills and die.
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