The Soil- Forming Factor Which Is Said to Make Soil

question 32

Multiple Choice

The soil- forming factor which is said to make soil more than "just dirt" is the ________ factor.

• A) topographic
• B) biological
• C) geologic
• D) climatic
• E) chronological

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Definitions:

Blastocyst

An early stage of embryonic development, a structure formed in the early development of mammals, consisting of a sphere of cells surrounding an inner fluid-filled cavity.

Morula

A early stage in embryonic development consisting of a solid ball of cells.

Zygote

The initial cell formed when a new organism is conceived by the union of sperm and egg cells.

Meiosis

A type of cell division that reduces the chromosome number by half, resulting in the production of gametes or sexual reproduction cells.