B, for sure. Producers, Like grass and Flowers need water to make food. Consumers, like Cats, Snakes and Boars need water to drink so our internal systems will function properly.
Im not sure if decomposers need water, but if there is less water then more animals die and they get food. so, not sure about that one.
Speciation is not a mechanism of microevolution.
Answer:
Pneumonia
Explanation:
The answer is most likely Pneumonia as Emphysema doesnt usually have fluid in lungs as a symptom.
Answer:
momentum
Explanation:
SI units of force and momentum are different.