1) Ozone (O3) is a highly reactive gas composed of three oxygen atoms.
2) The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere.
3) It protect us from harmful UV rays and radiation and help to reduce temperature.
Answer:
more cell types are needed to perform specialized functions in multicellular organisms
Explanation:
Cells in a multicellular organism differentiate to produce more cells that perform specialized functions. Each cell type in a multicellular organism has special features that enable it to perform a particular function effectively. In plants, cell differentiation occurs at the stem and root. The meristematic cells differentiate into either an epidermal, parenchymal or a vascular tissue depending on location.
