The biggest disadvantage of reliance on coal is that it
is difficult to transport.
has a low heating value.
is damaging to the environment to extract.
is used to power electricity-generating plants.

5. your analysis of child assessment data shows that a few of the students in your classroom are lethargic and exhibit challenging behaviors before snack time. you note that after snack time and lunch, they're engaged and responsive. what other information might you understand why? a. attendance data, teacher observation checklists, and frequency counts b. anecdotal notations, attendance data, and child health records c. family interviews, daily health check, and behavioral logs d. standardized assessments, time samples, and conversations with other teachers

What statement is true about all chemical changes? a) chemical changes can be undone. b) chemical changes cannot be reversed. c) chemical changes change the color of objects. eliminate d) chemical changes do not form new products.

Arandom variable x has a mean of 10 and a standard deviation of 3. if each value of x is multiplied by 2, what will the new mean and standard deviation be?