### acid:

Fumaric acid
* enhances performance of broiler chickens.
* is acid

Gibberellic acid
* can play an important role in seed germination.
* flower inducer that takes the place of a cold period.
* is chemical compounds
  - one of the most important and common gibberellins in plants
  - produced in the terminals of shoots and acts to increase cell elongation
  - the plant hormone that is responsible for plant tallness
* share one growth response with the auxins.
* simpler way to provide freeze rescue to plants.

### acid:

Glutamic acid
* 'non-essential' classified amino acid that is very common in plants and animals.
* combines with ammonia to become glutamine.
* is amino acid
  - an amino acid that is present in our bodies naturally
  - biosynthesized from a number of amino acids including ornithine and arginine
  - just one of many amino acids that are the building blocks of proteins
  - one of several amino acids which are the main components of proteins
* is one of the amino acids which make up proteins
  - major excitatory molecules in the brain
* major biotransformation product of endothall under aerobic conditions.
* nonessential amino acid that the body uses to build proteins.
* serves as fuel for the brain and calms the central nervous system.
* very polar molecule usually found outside of proteins and enzymes.

### acid:

Humic acid
* are present in all natural water used as sources of drinking water supplies
  - vital to normal plant growth including pest resistance
* can have a direct positive effect on plant growth in a number of ways
  - then absorb the proteins in the dead algae, trapping the nitrogen
* contribute to better tilth, water and nutrient retention, and soil aeration.
* grow more and better tomatos with better flavor and shelf life and at a very low cost.
* growth stimulant and a chelating agent.
* have properties similar to oxidized lignins.
* humic substance
* increase the protein and mineral contents of most crops.
* is an example of an organic acid in that it is formed from carbon-based compounds
  - available in liquid and dry forms from specialty nurseries
  - soluble in dilute alkaline solutions, and is precipitated by acidification
  - used in a large number of commercially profitable enterprises
* precipitate in acidic solution, but fulvic acids remain soluble.
* reduce bioaccumulation of some polycyclic aromatic hydrocarbons.
* serve many complex purposes in the soil.
* stimulates seed germination and viability, and root respiration, formation and growth.
* work in the low weight fraction on the cellular level.

### acid:

Hyaluronic acid
* enhances the zona pellucida-induced acrosome reaction of macaque sperm.
* helps the joints produce good joint fluid.
* is chemical compounds
  - expensive but popular
  - increased by estrogen
  - influenced by nutrition and other environmental factors
  - metabolized by hyaluronidase in synovium
  - needed to cushion and lubricate joints, eyes, skin and heart valves
* major component of synovial fluid, which aids in the lubrication of the joints.
* natural component of cartilage and joint fluid
  - polysaccharide and lubricates and cushions the joint
* naturally occurring glycosaminoglycan
  - substance found in the synovial fluid
* newer medication for joint injection, used to treat osteoarthritis of the knee.
* occurs naturally in body tissues and fluids
* provides a steay mousture source to dry skin.
* provides lubrication and helps prevents erosion of the cartilage
  - to the synovial membrane surface

Hydrocyanic acid
* inhibits cellular respiration and the animal's ability to use oxygen.
  - both inflammable and explosive
  - cyanide
  - inorganic compounds
  - more soluble in water than acetic acid
  - pure substances
  - toxic substances
* penetrates into the skin, the mucous membranes, and the bodily fluids.
* weaker acid than acetic acid.