Question

3) Where did the water of the rivers go 58 years ago? 4) Why is the lake smaller now?5) Can fresh-water fish live in very salty* water?​

Answer 1

Ответ:

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Объяснение:

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Answer 2

3. The water in rivers 58 years ago would have followed its natural course, flowing downstream towards the sea or into other bodies of water. Rivers continuously cycle and redistribute water through the hydrological cycle, which includes evaporation, precipitation, and runoff. It's important to note that river water levels can fluctuate due to various factors, including seasonal variations, climate patterns, and human activities such as dam construction or water diversion.

4. The size of a lake can change over time due to a variety of factors. Some common reasons for a lake to become smaller include:

   • Increased evaporation: If the climate in the region has become warmer and drier, lakes may experience more evaporation, causing their water levels to drop.
   • Reduced inflow: If the rivers and streams that feed a lake receive less water due to changes in precipitation or human water usage, the lake's water level can decrease.
   • Human activities: Dams, irrigation, and water diversion projects can alter the natural flow of water into and out of a lake, which may lead to changes in its size.

5. Freshwater fish generally cannot survive in very salty water. They are adapted to live in environments with low salt concentrations, typically in rivers, lakes, and ponds. Saltwater, such as in the ocean, has a much higher salinity than freshwater. If freshwater fish are exposed to very salty water, the high salt concentration can disrupt their osmoregulation, causing them to lose water and ions to the surrounding environment, which can be lethal. Some fish species, known as euryhaline fish, have some tolerance for varying salinity levels and can transition between freshwater and saltwater, but they are the exception rather than the rule.