PLEASE HELP WILL MARK BRAINLIEST Susana heats up a sample of red crystals. While the sample is being heated, a gas is released, and a blue powder is left after the heating. Is the sample of red crystals an element or a compound? Explain you answer. PLEASE MAKE THE ANSWER SCHOOL APPROPRIATE

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity

Explain the significance of thesaurus geographicus