The heat of the Earth's interior comes from which of the following sources?
a) radioactive elements
b) gravity
c) the sun
d) both a & b

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 !

The creation of the trans-siberian railway allowed people to travel across russia. how could this railway impact russian culture?

The magnitude of an earthquake is typically calculated according to the scale.           a. mercalli   b. fujita   c. richter   d. saffir-simpson