### alteration | variation:

Replacement
* are substitution.
* change attributes
  - sensory attributes
* create job opportunity
* involve replacements.
* is commutation
  - something that takes the place of something else
  - the substitution of conscious, living, higher animals with insentient material
* reduce herd health problems
* refers to methods that substitute for the use of whole animals
  - the use of non-animal methods instead of animals to achieve a scientific aim
+ Kidney, Renal replacement: Anatomy of the urinary system
  * People who do not have good kidneys are 'very' sick. If they have severe renal failure, they cannot live unless they have a 'replacement' for their kidneys. Replacement is something that takes the place of something else.

### alteration | variation | replacement:

Fluid replacement
* is critical for exercising individuals
  - crucial in any weather, but especially in hot and humid conditions
  - probably the most important nutritional concern for athletes
* special concern for children involved in sports activities.

Hormone replacement
* can thicken the bone.
* does have side effects.
* is necessary during menopause.
* maintains cortical bone lead content.
* prevents bone loss and heart disease.

Joint replacement
* Most joint replacements result from a wearing of the joints, known as degenerative arthritis.
* can improve the quality of life in terms of both pain and function.
* exist for the big toe joint, as well as other joints at the ball of the foot.
* frequent indication for surgery in adult patients with hemophilia.
* help relieve the pain and restore function.
* is most successful in large joints like hips and knees
  - such as hips and knees

Phosphate replacement
* can occur via a sodium or potassium replacement product.
* is used by many.

### alteration | variation:

Seasonal variation
* Some seasonal variation relates to temperature.
* accounts for only a small fraction of the total variance in all eight pesticides.
* are changes that occur in less than one year
  - greater on Mars than on any other planet with the exception of Pluto
  - larger at high latitudes
  - prominent in the diet of red foxes
* can also cause water quality changes
  - occur in sediment supply
* caused by the monsoons are mainly apparent in wind direction and rainfall.
* is described with improvement of symptoms in summer months
  - strong, both due to the planet's axial tilt and orbital eccentricity
* occurs at the sea surface.

### alteration | variation:

Substitution
* consists of stringification of the value, and string substitution.
* is for an integer number of cycles, regardless of frequency
  - taught in the Bible in a variety of ways
  - the method of solving one equation for x or y to find the answer to both equations
  - when a muscle or muscle group attempts to compensate for a weak or paralyzed muscle
* normally occurs at the position next to nitrogen.
* occurs at positions.
* process extensively used in mathematics.
* requires consideration.
  * increases the size of articles.

Temperature variation
* affect the elderly person more quickly than a younger person.
* are greater in the winter than in summer.
* can also occur where integrated circuits are socketed on a motherboard.
* causes curling and thermal expansion stresses.
* has impact
  - large impact
* impacts success.
* is greater for gasoline than it is for diesel fuel.

Alternative
* Some alternative termiticides have a strong repellency action to deter foraging termites.
* facilitate pursuits.
* impact cost.
* include methods
  - removal methods
* to solve problems.

### alternative:

Default
* are absence
* is absence

Meat alternative
* are products with a texture similar to meat that can replace meat in many dishes.
* made from soybeans are excellent sources of protein, iron and B vitamins.