Provide an example using one organ for each of the four levels of complexity. Why is it difficult to make level four organs in a lab? Please help :)

Christine, a three-year-old child, often wears her mother’s shoes and carries her bag while pretending that she is going shopping. sometimes christine copies her mother in the kitchen by stirring in empty pots. which type of developmental change is christine experiencing? a- social and emotional b- psychological c- physical d- cognitive

Curology what technique are the advertising using?

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation