In which organelle are ribosomes embedded?
a. smooth endoplasmic reticulum
b. peroxisome
c. rough endoplasmic reticulum
d. nucleus
e. lysosome

A. describe the model of urban structure most often observed in mega-cities in developing countries. explain how this model differs from common urban structures in north america. b. describe at least two factors leading to the growth of mega-cities in developing or least-developed countries. c. identify and explain two factors that led to the formation of squatter settlements in mega-cities in developing countries.

Which of the following statements is true of how pollutants can enter the environment from a sanitary landfill?

Which is not an explanation for why new approaches began to emerge in the 1950s and 1960s challenging the dominance of the psychodynamic and behaviorist approach