Mencione qué sistema del cuerpo humano participa. Manuel está enamorado de Ariana desde que estaban en la escuela. Él siente un vacío en el estómago y le tiembla el corazón cada vez que la ve.​

Acne is caused by a. a strict diet b. eating at night c. hormones d. dry skin select the best answer from the choices provided. a b c d

Tanya is not able to solve a problem because she’s unable to see it from a fresh perspective. which obstacle to problem solving is tanya experiencing? a. fixation b. counterproductive heuristic c. confirmation bias d. overconfidence

Avirus consisting of a single strand of rna, which is transcribed into complementary dna, is a ) proteaseb) retrovirusc) rna replicase virusd) nonenveloped virus