Jessie thinks that the first step in solving the equation shown below could be to use the addition property of equality. His friend robin thinks that the multiplication property of equality could be used first. Who is correct and why?.

Living organism in our word are connected to other variety of ways

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Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.