ECOLOGY
ENVIRONMENTAL ISSUES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Cold water holds less dissolved oxygen.
|
|
|
Cold water holds more dissolved oxygen.
|
|
|
Warm water holds more dissolved oxygen.
|
|
|
There is no relationship between temperature and dissolved oxygen.
|
Detailed explanation-1: -Cold water can hold more dissolved oxygen than warm water. In winter and early spring, when the water temperature is low, the dissolved oxygen concentration is high. In summer and fall, when the water temperature is high, the dissolved-oxygen concentration is often lower.
Detailed explanation-2: -Cold water, with its slow moving molecules, holds more dissolved oxygen than warm water. As water heats up, the molecules within it move faster, pushing some of the free oxygen atoms into the atmosphere.
Detailed explanation-3: -Explanation: Solubility of oxygen in water decreases with increase in temperature.
Detailed explanation-4: -Which best describes the relationship between temperature and dissolved oxygen in a lake? As temperature increases, dissolved oxygen decreases.