Anita and Tomás are trying to determine what decreases lightbulb brightness by testing and observing the following simple circuits. Which choice best identifies the students' next testable question?

What is the effect of adding a fan to both circuits?

What is the effect of adding another bulb to the circuit?

What is the effect of adding one more battery to both circuits?

What is the effect of adding a different type of wire to both circuits?

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.

When constance visited lookout mountain, what region was she seeing?

Apex q: arturo wants to increase his political participation beyond voting in elections. which action would accomplish this? answers: a. paying taxes b. starting a community cleanup program c. getting a public library card d. canvassing for a political candidate