8. When two groups are involved in trade, what is generally MOST likely to occur?

A. Exchanges will be very formal, so they are taken seriously.

B. Most groups will not benefit from the trade.

C. Groups will try to use exchanges to better the group.

D. Competition and conflict will disrupt the trading process.

E. they have intercourse

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !