1 1.3.1 Test (CST): Introduction to AP Environmental Science Question 2 of 25
Which of these is a type of organic matter found in plants?
A. Oxygen
B. Water
C. Carbon dioxide
D. Sugar

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 was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

Which nucleotide component contains nitrogen