75 points Plz help me I don't understand this guy

there is this guy that likes me and i like him a lot, i got advice and they said to tell him how i feel, i told him. and i waited a day for him to say something. nothing. so i got advice again. finally i just said it's fine it's just me and it don't have to be you. now he is upset. now what do i do?

Nelson is creating a powerpoint about the structural-functional perpectivebon poverty what perspective should he include in his presentation?

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period.the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided.a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs.an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.

What greek scientist created a screw to move water for irrigation?