SC.912.L. 15.13 Biology
STANDARD PRACTICE
Darwin developed his idea of evolution by natural selection based in part on
observations he made in the Galápagos Islands. Which of the following ideas
influenced Darwin's development of evolutionary theory?
A. the discovery that genes are made of a biochemical called DNA
B. the idea formulated by ancient Greek philosophers that all substances are made
of atoms
C. the development of the cell theory based on ideas from Mattias Schleiden,
Theodor Schwann, and Rudolph Virchow
D. the observation by British economist Thomas Malthus that the human popula-
tion could not continue growing faster than the food supply