How does a protein get across the endoplasmic reticulum's lipid bilayer into the "lumen" (inside) of the compartment?

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

This is so important ugh its 25 points

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air