Answer:
The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a tailgut.
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I think the correct answer from the choices listed above is option B. A modification of the leaves into the spine in a cactus plant can be seen The spines are modified leaves. It helps defend the plant and also reduce the surface area which helps limit loss of water.
<span>Diffusion is a process of desintegration or disolution. Equilibrium is where all states are equal. Equilibrium works here too, but too many invisible forces drag it into chaos. Equilibrium means less invisible chaos.</span>
Red blood cells actually carry the nutrients
