Which of the following best explains how subsoil becomes rich in minerals? A.
Volcanic activity heats the rock fragments in the subsoil and releases minerals.
B.
Minerals from the topsoil leach down into the subsoil.
C.
Groundwater flows through the subsoil and deposits minerals.
D.
The bedrock below the subsoil is broken down into smaller particles.

Volcanic activity heats the rock fragments in the subsoil and releases minerals.

Explanation:

Minerals from the topsoil leach down into the subsoil. Volcanic activity heats the rock fragments in the subsoil and releases minerals. Groundwater flows through the subsoil and deposits minerals. The bedrock below the subsoil is broken down into smaller particles.

creative diagnostics provides a protocol for total protein extraction based on ripa which is widely used.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.