One way in which experimental research differs from observational research is that only experimental research can show cause and effect and is denoted as option D.
<h3>What is Cause and effect?</h3>
This is the situation in which one event contributed to the formation of another according to the type of relationship between the variables.
This is commonly used in experimental research so as to prove the interconnection and is tested by scientists in other to ascertain its authenticity.
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Aluminum cans are recycled rather than disposed in landfills because aluminum is 100 % recyclable, meaning it is a sustainable material, it can be recycled as many time as possible without losing its material and quality. then recyling aluminum only requires 5 % of the energy to make a new aluminum can
Answer:
20
Explanation:
There are 20 types of amino acids in proteins, each one has different chemical properties. A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond.
The <span>nucleolus is located inside the Nucleus. </span>