The correct answer is - B. feathered.
The primitive mammals were very small (with a couple of exceptions), rodent-like, also very often described as shrew-like. They were feeding with plants, as well as with insects and the occasional egg. Most of them were night creatures, and they were living in the shadow of the much bigger dinosaurs.
So, they were small, furry, rodent-like, night-dwellers, but there isn't a single evidence that any of the primitive mammals, or any mammal whatsoever, had feathers.
The correct answer would be C. both types of energy pyramids contain the same species of organisms. This would be the incorrect one because aquatic and terrestrial ecosystems do NOT have the same organisms living in them.
Answer:Primary reinforcers
explanation reinforcers that have innate reinforcing qualities.
Physical change only change the appearances of a substance, not it’s chemical composition. Chemical changes cause an entirely new substance with new chemical formula.
