Which of the following describes a potential problem with case studies? 1. They generally involve too few participants to allow meaningful conclusions. 2. They generally involve too many participants to allow meaningful conclusions. 3. They are generally conducted by people who are untrained in scientific observation. 4. They are generally biased due to the patient’s awareness of their illness.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

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examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).