What is one variable that friction depens on A. how much light there is
B. the color of the objects
C. how hard the surface of the objects are being pressed together

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

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?