How many hemispheres does the earth have?

a. 1
b. 3
c. 5
d. 4

People keep spending additional units of a particular resource on a want until their marginal benefit is  decreasing withgreater thanless thannot affected by  their marginal cost.

Which types of seismic waves travel through earths interior? select all that apply. a) l waves b) p waves c) s waves

Irelanda. populationb. square mileagec. average population density per square mile