B. the intensity o stimulus and the observer's criteria.
Their skin is thin so they're prone to drying out and they cannot hold moisture in their bodies(Waterproof skin)
Answer:
Primary consumers
They eat the majority of prey
Porosity<span> is a measure of how much of a rock is open space. This space can be between grains or within cracks or cavities of the rock. The substance which has the greatest porosity would be the one that would absorb more water and faster. Hope this helps. Have a nice day.</span>