Aridisols are soils characteristically found in a. forests b. plains c. deserts d. swamps

Option C, deserts, is the right answer.

Formed in a dry or semi-arid atmosphere the Aridisols are also known as the desert soil. The 1/3 of Earth’s land surface is covered by this soil. This soil has a very low density of natural matter, considering the lack of vegetative generation on these hard soils. The main characteristics of this soil include accumulation of crystals, little natural element and sparse vegetation.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.