Responding to the environment is the characteristic of life that best describes the process of homeostasis. Homeostasis is the ability of a body or living organism to adjust its internalenvironment in order to maintain astable equilibrium regardless of the external changing conditions.
The nucleus is the control center of the cell, it also contains the DNA of the cell.
Water means it is the mixture of hydrogen and oxygen. As we know that
hydrogen is colourless as well as oxygen is also colourless gas.
So at last when hydrogen and oxygen reacts with one another and they
form H2O means water. If both are colourless so their product will also
be colourless. So water is seen colourless.
The answer is Bacteria
Prokaryotes are a microscopic single Celled organisms that has neither a distinct nucleus with a membrane nor other specialized organelles.