In hydrangeas, the genotype dictates that the default color is red. This is due to the presence of a red molecule called anthocyanin in the sepals. The color of hydrangeas can change when the anthocyanin molecule binds with aluminum in the soil to form a blue complex of aluminum plus anthocyanin or metallic anthocyanin. According to the graphic, what environmental conditions support the production of blue flowers in hydrangeas?

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.