Which of the following has not contributed to the increase in Earth's human population? creating landfills

better nutrition

clean water

better medicine

Creating landfills

Explanation:

This is an effect of the growing human population and not a cause

texas governor sam houston opposed secession, but was unable to prevent it. in this speech, given prior to lincoln's election, he presents the argument that slavery would be safer within the united states than outside of it. it was a prescient argument, and one held by several other southern leaders.

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