Explanation: Electron microscopes are the most powerful type of microscope, capable of distinguishing even individual atoms. However, these microscopes cannot be used to image living cells because the electrons destroy the samples.
Covalent bonds are formed when two non metal atoms share an electron. The atoms either give up or gain an electron, due to the outer shell being unstable.
They all have chromosome disorders (irregular number, extra or missing chromosomes)
Blood is constantly processed by some excretory organs even though it is not excreted by the excretory system.
