Which of these statements is an example of replication? A. A scientist completes four trials for an experiment. B. A scientist repeats calculations before reporting results. C. A scientist conducts an experiment using a previously reported method. D. A scientist uses three treatment groups in a study to test different variables.

answer; ///i believe that the correct answer is (a) specialized cells)

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.