Pls help A student conducts an investigation to determine how the force of gravity affects different objects dropped from different heights. The student tests each object one time and announces that all objects experienced gravity the same way. What is wrong with the student’s reasoning?

A. The student failed to create a graph or chart to communicate the results instead of just announcing them.
B. Gravity is unable to be tested with simple experiments, but only in a science lab.
C. People are unable to test the effect of gravity on an object because the force is too strong, so the results were invalid.
D. The student failed to conduct repeated investigations with the same object to test for result reliability.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'