Calcite occurs in igneous, metamorphic, and sedimentary rocks and is the most commonly encountered carbonate mineral.
A group of similar (accoding to function) types of cells, when comes together to perform a specific function, then it forms a tissues.
When a group of similarly working tissues come together then they form an organ.
And this relation could be written as
cell > tissue > organ
So, organ is a collection of tissues and tissues are collection of cells.
Genetically modified human isn't normal. The reason for this is that they are changing the original genetics of the human body. Even though genetically modified humans can have benefits, it also can have bad consequences.
The basic unit of temp. is the degree, which could be Celcius, Fahrenheit or Kelvin.
