Flooding can cause rivers to expand. when it does, it can get out of control and go to any urbanization near by. once it does it picks up any small items in the city. this can cause the river to get dirty, or polluted.
When people make dam's, a earth quake could happen, causing the dam to collapse and create a flood. If humans didn't build the dam, the flood would never happen.
Answer:
Pros-
Geothermal energy is generally considered environmentally friendly and does not cause significant amounts of pollution.
Geothermal reservoirs are naturally replenished and therefore renewable (it is not possible to exhaust the resources).
Massive potential – upper estimates show a worldwide potential of 2 terawatts (TW).
Excellent for meeting the base load energy demand (as opposed to other renewables such as wind and solar).
Great for heating and cooling – even small households can benefit.
Harnessing geothermal energy does not involve any fuels, which means less cost fluctuations and stable electricity prices.
Small footprint on land – can be built partially underground.
Geothermal energy is available everywhere, although only some resources are profitably exploitable.
Recent technological advancements (e.g. enhanced geothermal systems) have made more resources exploitable and lowered costs.
Cons
- There are some minor environmental issues associated with geothermal power.
Geothermal power plants can in extreme cases cause earthquakes.
There are heavy upfront costs associated with both geothermal power plants and geothermal heating/cooling systems.
Very location specific (most resources are simply not cost-competitive).
Geothermal power is only sustainable (renewable) if the reservoirs are properly managed.
Explanation:
Answer:
D - Technology has changed over the years, but parents still worry about it.
The answer is D because in both of the light pink boxes, it says that the parents are concerned about it, and in the first pink box it talks about the radio and then in the next box it talks about video games, TV, and the internet, which is showing that technology has improved over time.
A and B are wrong because neither of the two pink boxes talk about the year(s) it took place, so the main idea isn't based of of those two. C is wrong because neither of the two pink boxes talk about the dangers of being online. But D is the only option that is included in both boxes, so D is correct.
