An antigen is whereas an antibody is a foreign substance such as a protein or a polysaccharide to which lymphocytes respond; a globular protein that reacts with an antigen to eliminate the antigen an immunoglobulin that is produced by lymph nodes in response to bacteria; a foreign protein that enters the body and causes an immune reaction a hapten molecule that is complex in shape; an enzyme produced by the thymus gland that neutralizes antigens only on a pathogen; only in a human body. none of the above

An antigen is a foreign substance such as a protein or polysaccharide to which lymphocytes respond whereas an antibody is a globular protein that reacts with an antigen to eliminate the antigen.

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.