Answer:
Chinese historians have spent well over a thousand years trying to understand why the Han Dynasty collapsed. Over time they developed three main theories: 1) bad rulers; 2) the influence of empresses and court eunuchs over child emperors too young to rule by themselves; and 3) the Yellow Turban Revolt.
Explanation:
Pre-operational which is 2-7 years old. Imagination is strong but complex abstract thought it difficult .
Archaea differ in the fact that their cell wall does not contain peptidoglycan and cell membrane uses ether linked lipids as opposed to ester linked lipids in bacteria.
What is the difference between archaea and bacteria ?
Types of molecules that distinguish bacteria and archaea.
- Bacteria have a unique compound called peptidoglycan in cell walls.
- Archaea have unique phospholipids in their plasma membrane and hydrocarbon tails that contain isoprene.
Bacteria :
Bacteria are small single-celled organisms. Bacteria are found almost everywhere on Earth and are vital to the planet's ecosystems. Some species can live under extreme conditions of temperature and pressure. The human body is full of bacteria, and in fact is estimated to contain more bacterial cells than human cells.
Archaea:
Archaea are a group of micro-organisms that are similar to, but evolutionarily distinct from bacteria. Many archaea have been found living in extreme environments, for example at high pressures, salt concentrations or temperatures. These types of organisms are called extremophiles.
Learn more about micro organisms :
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