It is unlikely that we will be able to detect the signals from civilizations in other galaxies because a) signals from other galaxies will be severely weakened by distance, making them far harder for us to detect b) other galaxies are unlikely to harbor intelligent civilizations c) they will most likely transmit at wavelengths that will be absorbed by intergalactic gas d) signals from civilizations on other galaxies will not reach us before we give up listening

This excerpt from article il of the u.s. constitution describes which of thepresident's major functions?

1of the following choices, which one best describes one way that christianity came to east africa? a. christians traveled in caravans through the sahara desert and introduced the people of mali to a new religion. b. christian traders from the mediterranean interacted with the people of axum. c. christian military from west africa traveled across the continent to bring their religion to the people of east africa. d. christian rulers from asia traveled to east africa to bring their religion to the people. 2 which trade item from outside the region did west africans need most? a. gold b. camels c. salt d. iron

Why were so many distinctive cultures able to develop over time in asia?