Their is a blue and pink bridge glowing in the night, and a yellow/green leaf right infront of it swaying side to side. The crystal clear water reflects the bridge so vividly and shows the outmost beauty in the colors.
Explanation:(a) Was this an observational study or an experiment? Explain your reasoning. Experiment, because certain variables were controlled (he sets the screen brightness to low and then starts a movie) to determine if iPhones last longer if the screen brightness is set to low, and it proves the cause and effect relationship.
(b) What is the explanatory variable and the response variable? Response Variable- To determine if iPhones last longer if the screen brightness is set to low Explanatory variable- he sets the screen brightness of 10 of the iPhones to high and starts a movie, then the other 10 to low and starts a movie.
(c) Was a random sample used to collect the data? Yes- “he selects a random sample of 20 brand new iPhones”
Pigments are defined as the set of compounds that have an intense colour and are used in the colouring of other materials. These colouring substances are also called Biological Pigments or the Biochromes, which mainly refers to the true pigments.
Answer:
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Explanation: