What are the names of two kinds of worker bees?

What is a common factor all nonprofit businesses share? they pay no income tax. they have no capital. they are national in scope. they perform charitable acts.

Humans are the only animals capable of communication

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is: