Which major biome group is most of the united states part of?

Mainly it belongs in the deciduous forest biome. The U.S also includes the desert, tundra, and coniferous forest biomes.

Put this under 'Geography' next time.

Hope this helps!

~GeeksandNerds 

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.