The membranous granum<span> is typically found in more complex plants rather than simplistic ones. The grana in the chloroplast act together as a unit and are interconnected through small tunnels in the lower part of thylakoid stacks called stromal thylakoids.
pls mark me brainliest</span>
Answer:
C)
Explanation:
A measure of the amount of open space within unconsolidated sediment or rock.
The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges. The brain is also cushioned and protected by cerebrospinal fluid.
