How might the existence of low-pressure bands at the equator and 60 degrees and high-pressure bands at 30 degrees and the poles affect the types of biomes in those areas?

Life on earth follows climate regimes, biomes develop characters in relation to climate of the region.

Explanation:

The air at the high pressure that is at the 30° band sinks and experiences a dry and warm condition that is in contrast to those found at the equator regions. The winds and atmospheric conditions also affect the growth and development of the biomes. Such as those found in desert regions have a low latitude that is around the tropics. As the rays of the sun travel at a shorter distance to reach the surface as compared to the poles. Low pressure creates thin air rises and leads to cloud formation as compared to high-pressure air.

Can you show the map?

Ones bigger then than the other