Which of the following factors does not vary between a fast-following river and a pond that receives no water input?
a. oxygen levels
b. salt concentration***
c. temperature
d. fish species
Plzzz help me:)
B, salt concentration
NVM, i'm done!
what was the answer?
The correct answer is B
To determine the factor that does not vary between a fast-following river and a pond that receives no water input, let's analyze each option and consider the characteristics of both environments.
a. Oxygen levels: In a fast-following river, the water is in constant motion, allowing for enhanced oxygenation through the natural mixing of air and water. Ponds, on the other hand, may have limited oxygen levels if they do not receive water input, leading to lower oxygenation. Therefore, oxygen levels can vary between a river and a stagnant pond.
b. Salt concentration: This option seems likely as rivers generally have low salt concentrations (unless they are situated near the coast), while a pond without water input would eventually evaporate, leaving behind salt deposits. Therefore, salt concentration could be the correct answer.
c. Temperature: Temperature can vary in both rivers and ponds, as it is influenced by external factors such as climate and season. Additionally, water sources, such as tributaries, can affect the temperature of a river. Therefore, temperature can vary between a river and a pond.
d. Fish species: Fish species can be influenced by various factors, including the presence or absence of water input and the specific environmental conditions provided by each habitat. Therefore, fish species can differ between a river and a pond.
Based on the analysis above, the factor that does not vary between a fast-following river and a pond that receives no water input is b. salt concentration.