Answer:
Scientists continue to add new kingdom to the system of classification because with the passage of time new organisms are discovered which have unique properties. These organisms donot fit to place in kingdom of classification. For example, protists are the organisms having both plants and animals characteristics so it cannot be placed into plants or animals kingdom so scientists make a new kingdom named protista.
During cellular respiration, oxygen is a necessary ingredient to make its process possible. Losing the forests would create a very huge impact on the cellular respiration in other organisms since the forest, which is composed of plants and trees, is the main source of oxygen. Without oxygen, cellular respiration will not happen in other organisms which would result in scarce food and eventually, most of the organisms will die.
Answer: the mantle B
Explanation: Largest layer resulting in biggest mass.
Answer: option C.
A commonly accepted set of scientific ideas or assumptions.
Explanation:
A paradigm is a set of ideas or assumptions, thought patterns or concept that scientist use to describe a legitimate field. The purpose is to provide the audience with illustrations about some occurrences which will help to guide them.