The world population growth rate in 2015 is about 1 percent. It is expected 1 point to drop to 0.5 percent by 2050, partly because of increased access to
birth control in developing nations. Another likely cause for the expected
decline is
O a decrease in the spread of pandemic diseases like Ebola
O on increase in the total fertility rate in developed nations
O an increased global food supply as a result of climate change
Oincreasing numbers of women entering the workforce in developing nations

Read the sentence. “yesterday we arrived late for the outdoor concert in the city gardens.” which words in the sentence are adverbs? a. late; city b. yesterday; outdoor c. yesterday; late d. outdoor; city

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Construct at least two possible hypotheses for the student’s experiment.