Mesophyll cells<span> (both palisade and spongy) are packed with chloroplasts, and this is where photosynthesis actually occurs. </span>Epidermis<span> also lines the lower area of the </span>leaf<span>(as does the </span>cuticle<span>). The </span>leaf<span> also has tiny holes within the </span>epidermis<span> called</span>stomata<span> (H-light green).</span>
Both were powerful nations and they served as trading hubs in their respective regions during that time.
Answer:
In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections.
Explanation:
Okay so there are two types of ERs, smooth and rough.
Rough endoplasmic reticulum contain ribosomes on the outer surface. It provides large surface area for proteinsynthesis and the synthesis of glycoproteins and also provides a pathway for the transport of materials.
Smooth ER synthesises, stores and transports lipids and carbohydrates.
Hope this helps