Decomposers are necessary in the food chain because they return nutrients to the ecosystem (2)
A combination of two or more metals is called and Alloy.
Answer: Cell Wall
Explanation: Both archaea and bacteria have a/n Cell Wall, but it is made of peptidoglycan in bacteria and pseudo peptidoglycan in archaea.
Answer : True
Enrichment cultures are used to increase a small number of desired organisms
Glycine, histidine, proline
