jake is 4 years old, and learning to use language and think about the world symbolically. His older sister Jaimie is 13 years old, and progressing into puberty. Jake's younger sister, Taylor, just turned a year old. Which of these children - Jake, Jaimie, or Taylor - are considered to be in the preoperational stage of development according to Piaget's theory

Jake is in the preoperational stage of development

Explanation:

according to Piaget's theory this stage begins at age two and lasts to about the age of 7.During this period, children are thinking at a symbolic level but are not yet using cognitive operations.

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.