Which layer of soil has little or no humus?

In the layers of the soil that has little humus is the subsoil. The subsoil is the layer after the topsoil. Humus is very important in plants because the humus keeps the moisture of the soil. It makes it easier for plants to drain the excess water as well as allows air to permeate into the soil

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).