Answer:
The correct answer is B. No jaws. The new species resembles an ostrachodermi.
Explanation:
Ostrachodermi is an extinct class of agnate fishes, considered as the most ancient vertebrate. They were little filtering organisms, with no mandible or jaws, and no paired fins. Their bodies were covered by squama, bony plates, and shields. They used to move in the bottoms when they were feeding on detritus.
Answer: Acid-fast and Gram
Explanation:
The gram stains peptidoglycan and the acid-fast stain stains mycolic acid, which are both in the cell wall.
Soil in cooler climates would most likely be well developed and have Lots of organic matter .
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The definition of a biome is the community of many ecosystems in one general area. Many ecosystems can exist in a biome because a biome could have a water ecosystem and a dirt ecosystem.