How has technology affected communication?
o
a. it has made it possible to move instantly between distant
locations.
o
b. it has eliminated pollution associated with communication.
o
c. it has made it possible to speak directly with people who are far
away.
o
d. it has made it so that everyone speaks the same language.

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

Plz ! ive been stuck on this forever

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.