Clues to what ancient climates were like come from all of the following except
a. ice cores.
b. thickness of rock layers.
c. fossil tree rings.
d. plant pollens.

Identify, in detail, three environmental effects of agriculture and explain how the actions of farmers cause them. what is the relationship between poverty and obesity in america and why? what are genetically modified organisms? list two pros and two cons for using genetically modified organisms. y'all this is due !