It is probably the l<span>amellae.
The lamellae are sheets of bony matrix. This bony matrix is produced by o</span>steoblasts, which are cells that synthesise collagen<span> and specialised proteins like </span>osteocalcin<span> and </span>osteopontin. These are then the most important constituents of the bony matrix.
Motor skills
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The correct answer is B) abundant light, abundant bacterial prey.
The situations that would be most favorable to the re-establishment of resident zoochlorellae, assuming compatible Chlorella are present in P. bursaria's habitat is "abundant light, abundant bacterial prey."
This element needs these conditions of abundant light and bacterial prey to have the correct metabolism and live. The bacterial prey will help the element to grow. This is going to increase the preservation of the green algae.