Structure. A hypha consists of one or more cells surrounded by a tubular cell wall. In most fungi, hyphae are divided into cells by internal cross-walls called "septa" (singular septum). Septa are usually perforated by pores large enough for ribosomes, mitochondria and sometimes nuclei to flow between cells.
I think the answer is b, because cartilage is what helps with flexibility in tissues....
Watching The moon with his telescope
The conservation of forests is vital to our ecosystems, because they provide sustainable amounts of habitat for animals, who live in them. On top of that, forests provide us with a large amount of oxygen. Trees go through photosynthesis, in which they take in carbon dioxide out of our air, and give back oxygen which is vital for all living things. All that being said, conserving trees helps regulate climate control, and overall helps us have healthy ecosystems.
<span>Tropics
A lot of rain falls there, so the possibility of acid rain and smog which can be carried by warm humid air can also form. </span>