AP BIOLOGY

Detailed explanation-1: -Expert-Verified Answer. Tropics is the term used to describe the region where moisture and temperature are generally high. In terms of classification, tropical climate is non-arid throughout the year and warmer than 18 degrees centigrade with a high degree of humidity or moisture in the air.

Detailed explanation-2: -The tropical rainforest biome has four main characteristics: very high annual rainfall, high average temperatures, nutrient-poor soil, and high levels of biodiversity (species richness).

Detailed explanation-3: -Temperature and moisture are the two climatic factors that most affect terrestrial biomes.

Detailed explanation-4: -The two arctic zones extend from the arctic or antarctic circle to the north or south pole. Based on the amount of water available to plants, climates can be classified as arid (dry), semi-arid, semi-humid, or humid (wet). The moisture of a biome is determined by both precipitation and evaporation.