Answer:
Uniformitarianism: assumption that the same natural laws and processes that operate in our present-day scientific observations have always operated in the universe in the past and apply everywhere in the universe.
Explanation:
Food webs normally start at the bottom and work their way up. Like the plants will be at the bottom, and then each level shows the animals getting bigger while losing energy. You continually lose energy as you work your way up an ecosystem, so normally there are only three or four levels. I hope this helps!
Observable characteristics would be referred to as "traits".
Answer:
The Simplest of Eukaryotic Cells. Microsporidia are intracellular parasites that infect most other eukaryotic cells, although arthropods are the most commonly parasitized. They are the simplest and smallest eukaryotic cells and thus represent a textbook example of reductive evolution [1].
Link: https://designmatrix.wordpress.com/2009/03/10/the-simplest-of-eukaryotic-cells/