Will be marked the brainliest: )
can somebody me with # 9 . the only way to answer the question is by looking at the first image.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.