Answer:
The cities have a much larger populations in smaller areas, which can cause more crime and overcrowding, along with pollution.
Answer:
A duckling swimming after its mother.
Answer:
A prolonged drought with very high temperatures can affect the water levels of the water table underground.
Explanation:
The water that is located underground is generally safer when it comes to climate or weather conditions, at least in the shorter run. They are not immune though, as even though they are underground, they are not very deep, and also their levels depend on the outside conditions. Several climate or weather conditions can have an effect on the water table of the underground water, but the one that sticks out the most is a prolonged drought with high temperatures.
A prolonged period of drought will mean that there will be no precipitation for a long period of time. Without precipitation, there will be no new water coming in the undergroung water table. On the other hand, high temperatures will result in intense heating up of the ground, and some of the heat will be reaching the water table underground, so the evaporation will increase. With no water coming in and increased evaporation, the levels of water will drop.
Similarities:
- Marine and freshwater ecosystems are water, covering almost 75 percent of the earth's surface.
-The most pervasive problem affecting both freshwater and marine ecosystems is pollution.
-The process of regulating the osmotic pressure on fluids inside an organism is essential to all freshwater and marine species.
Differences:
- Marine ecosystems are more diverse than freshwater ones.
- In marine or seawater, the salinity level, or the concentration of salt is greater, but freshwater is not totally void of it.
- Only 1% of the whole water body on the earth is freshwater, the other 99% is marine water.
Note- I couldn't come up with ones for estuaries, sorry.
