<span>If a scientist is trying to determine whether the use of cell phone contributes to brain cancer, then the most significant weakness in this type of study is the relationship between the cell phone and brain cancer itself. It is hard to identify its connections and consequences with each other.</span>
Answer: Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products.
Explanation:
Answer:Anaerobic Chemoheterotroph.
Anaerobic bacteria is a bacteria which breaks down its nutrients using carbon dioxide or in the absence of oxygen.
Chemoheterotroph is a bacteria which has the capacity to utilize nutrients in the form of chemicals and it can utilize organic nutrients also.
ANAEROBIC CHEMOHETEROTROPHS ARE BACTERIA WHICH FEEDS ON BOTH INORGANIC AND ORGANIC NUTRIENTS IN THE ABSENCE OF OXYGEN OR THE PRESENCE OF CARBON DIOXIDE.
Explanation: