Poor living conditions in the cities reached the point that: a. governments adopted measures in an attempt to try to prevent the spread of catastrophic epidemics. b. private corporations took the lead in developing approaches to urban problems. c. corporations began to relocate into rural areas on a very massive scale. d. urban warfare broke out in most European industrial cities. e. factory owners led the way in addressing pollution.

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities? it's b

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.

Match each theory with its description. 1. oscillating universe theory 2 the universe came from a very dense, very hot "fireball" that exploded and expanded into existence. 2. inflation theory 3 the universe is a never-ending cycle of big bangs and big crunches. 3. big bang theory 4 the universe has always been and continues to be the same. 4. steady state theory 1 a very, very fast expansion and acceleration of the universe happened milliseconds after the big bang.