A scientist uses a computer model to predict that Earth's average temperature will increase between 1.8°C and 3.2°C by the year 2100. The precise increase in temperature depends on people's decisions in the future,

What are genotypes? what are phenotypes?

Look at the photo of the leaf. which term best describes this leaf?

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures