When Malthus was analyzing the relationship between food and population growth, he theorized that because food production grew linearly while population grew exponentially, there would undoubtedly be a scarcity of food. However, this is not yet true (climate change may change that), so which of the following did he fail to consider? Select all that apply.
a) Technological advancements in agriculture
b) Improvements in distribution systems
c) Changes in societal norms regarding family size
d) Government policies on food production and distribution