Animals that have a backbone are called Vertebrates. (Mammals, for example.)
The movement of a snake is referred to as “Slithering.”
The Stapes is the smallest bone in the human body.
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The answer is “d” (1,000 kcal). As the trophic level increases energy is decreases by 10 times that of the previous level. If a system has 10,000 kcal, then the primary consumer have 10 times less (10,000/10) which is 1,000 kcal. The secondary consumers have 100 kcal and the tertiary have 10 kcal. Only 10% of the energy at each trophic level goes on to the next.
The correct answer would be D. DNA evidence showing it was more closely related to mammals than to other vertebrates <span />
