Answer:In old stems the epidermal layer, cortex, and primary phloem become separated from the inner tissues by thicker formations of cork. Due to the thickening cork layer these cells die because they do not receive water and nutrients. This dead layer is the rough corky bark that forms around tree trunks and other stems.
Explanation: wikipedia.
Answer:
Ingestion may cause nausea, vomiting, diarrhea, and abdominal pain. Skin contact may cause irritation and skin discoloration. Eye contact may cause serious irritation.
When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.
