The narrow belt of high-speed winds that blow from west to east, between 6,000-12,000 meters above Earth's surface is called the ___ . Airplanes traveling in the same direction can use them to travel faster.

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.

Does this your question?

A. to determine if humans can explore mars safely