Does Israel really exist? Or is it Palestine

One common educational practice is to chart students' progress over time so that students can see their own improvement. these progress charts often lead to higher student achievement in the absence of other observable forms of reinforcement. the effectiveness of such charts in changing behavior illustrates the role of reinforcement as:

Which article of the us constitution addresses the issue of interpeting the laws of the united states

There are 25 elements found in living things. how many of these elements are found in some organisms but not all? 1 , 6 , 19 , 25