A. many parts of the brain appear to have no useful function in today's world. b. losses of small areas of certain parts of the brain rarely cause devastating, often permanent, losses of function. c. all the brain areas become active on brain scans at one time or another as we think, feel, and perceive. d. every part of the brain has a redundant backup, which is why brain injuries are so rarely serious.

What's the question to these answers?

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.