Plant cells have thick, sturdy cell walls, which provide rigidity and hold up the plant.
Answer:
The chemical formula of Sulphur and Oxygen under normal conditions are S8 and O2 respectively.
If you are asking about the compounds formed from sulphur and oxygen, which sulphur dioxide and sulphur trioxide are the 2 most common compounds, their chemical formulas are SO2 and SO3 respectively.
Living things has emerged into three domains called Archaea, bacteria, and eukaryotes. Evident that support the idea that multi cellular that is eukaryotic cell evolved from the prokaryotic cell are the descendents of the separate prokaryotic cells that together form a union which are inter dependent.
For example: The mitochondria which is referred to the energy source of the cell is considered as the great-great-great-granddaughter of a bacterium cell which is free living. This free living bacterium bacterial cell was consumed by an other cell and this remained as the stable guest in the cell. This mitochondria provided chemical energy to the cell and also protected the nutrient rich environment. which surrounds it. This process of one organism residing in the other organism completely is called endosymbiosis.
Answer:
Helium has many unique properties: low boiling point, low density, low solubility, high thermal conductivity and inertness, so it is use for any application which can exploit these properties. Helium was the first gas used for filling balloons and dirigibles.