Do children under the age of 13 that have social media accounts have more behavior problems in school? What is the independent variable? A). The number of behavior problems in school

B). Children under 13 with social media accounts

C). Use of electronics after 9 PM

D). Students over the age of 13

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

The ability to make things happen is also called a. heat b. force c. matter d. energy

What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane