Which answer best describes the main negative impact of the invention of the cotton gin? a it increased the demand for slaves and made slaves more valuable. b it caused a devastating plague on cotton plants in southern states. c it required interchangeable parts which were expensive to produce. d it created pollution because it used a lot of fuel in order to power it.

Humans during the paleolithic era used fire for each of the following purposes except a. for cooking meat b. for use as a weapon c. for heat and warmth d. for treating animal hides select the best answer from the choices provided

What were copernicus’s ideas about the order of the universe deemed to be dangerous to church thinking? (5 points) a.the church was invested in the idea that the earth was at the center of the universe b.copernicus was developing a new religion that would challenge the church c.the church feared his ideas threatened their control of european universities d.copernicus was a follower of luther and therefore could not be trusted

The diagram shows fossils buried in layers of rock. which conclusion is best supported by the diagram?