A student wanted to see if the color of water impacted the increase in temperature, in degrees Celsius (°C), after 30 minutes in the Sun. Three
beakers were filled with 50 milliliters (ml) of water, and five drops of food
coloring were added to each beaker. The beakers were then placed on a
window ledge in direct sunlight and temperature readings were recorded
every 10 minutes for 30 minutes. What was the test (independent) variable
in this experiment?

Which statements describe sustainable development? multiple answer choice -fishing does not remove more fish from water systems than can be replaced by the number of fish that will be born to replace them. -sustainable development is development that is designed to improve the economic conditions in less-developed countries. -sustainable development is mainly a regional issue. -sustainable development means water is used at a rate that won't reduce the amount available for future use. - sustainable development policies only need to be concerned with environmental protection. - trees cannot be cut down faster than the number that will be replaced by new growth.