I’m pretty sure it’s D.
Qualitative data is data that can be observed but cannot be measured
The only thing not being measured is descriptions of behavior
Answer: here´s why
Explanation: Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds. If water is heated, its volume gradually decreases.
The answer is D) the organ system.
B. A fish because it has a back bone, unlike the other answers.
