Which of the statements below is valid?
...The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
Which of the statements below is valid?
The bird's blood was always warmer than that of the lizard
The body temperature of the bird varied less than that of the lizard during changes in environmental temperature
The body temperature of the bird remained constant despite changes in environmental temperature
The body temperature of the lizard was always close to that of the environmental temperature
Correct answer is B
No explanation has been provided for this answer.
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