Which of the following is a function of the spleen?​

The spleen has some important functions:

it fights invading germs in the blood (the spleen contains infection-fighting white blood cells)

it controls the level of blood cells (white blood cells, red blood cells and platelets)

it filters the blood and removes any old or damaged red blood cells.

Clearance of microorganisms and particulate antigens from the blood stream.

Synthesis of immunoglobulin G (IgG), properdin (an essential component of the alternate pathway of complement activation), and tuftsin (an immunostimulatory tetrapeptide)

Removal of abnormal red blood cells (RBCs)

Explanation:

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.