### young bird:

Nestling
* are ectothermic at birth and rely on their parents to maintain internal temperature
  - fed regurgitated insects by both parents
  - fully feathered baby birds who are still in the nest
  - helpless and naked at hatching but grow quickly
* beg for food by crouching with their mouths opened wide, waving their heads.
* die from starvation, adverse weather, and attacks by raccoons, owls, and other animals.
* have no feathers, are blind and only tiny bills.
* make a noisy grating begging call when seeking or expecting food.

### young children:

First grader
* are young children.
* make dinosaur fossils out of plaster and clay in their study of geologic time.

### young discipline:

Underwater archaeology
* is archaeology
  - the study of shipwrecks and ancient artifacts beneath the seas
* young discipline.

### young fish:

Parr
* are young fish.
* collection of image manipulation code.

### young persons job:

Police work
* is one of the most stressful jobs in the world
  - people work
* young person's job.

### young women:

Medical worker
* Most medical workers are young women.
* face emergencies on an everyday basis.

Youth group
* Many youth groups make money year-round by recycling newspapers and cans.
* Some youth groups are places where people look for victims
  - require spiritual chiropractic in order to realign aching members of the body
* ministry that is for youth.

Zero
* are a type of share that has a predetermined redemption date and price
  - as important as any other number
  - digits
  - integers
  - numbers
  - one class of share issued by split-capital investment trusts
  - part of kernels
* indicate lines which make up the edges of waterbodies.
* is an amount

Zinc compound
* are numerous and are widely used.
* can be corrosive in the stomach
  - move into the groundwater and into lakes, streams, and rivers
* occur naturally in the air, soil, and water, and are present in all foods.
+ Zinc, Safety: Chemical elements :: Transition metals
  * Large amounts of zinc metal are toxic. It can dissolve in stomach acid. When too much zinc is eaten, copper and iron levels go down in the body. Zinc compounds can be corrosive in the stomach. Zinc compounds put in the nose can ruin the sense of smell.

Zooid
* alternate biserially on branches, with individual zooids tapering proximally.
* are narrow in the proximal portion, wider distally
  - organisms
  - short, widening distally and tapering proximally
  - very small , highly modified individuals
* carry prominent ciliated tentacles.
* eventually detach to form a. body is dorsoventrally flattened a. gametes.
* is an organism
+ List of animal phyla, Phyla, Deuterostomia: Invertebrates :: Lists of animals :: Groups of phyla :: Glossaries
  * They have a long fossil record. Zooids carry prominent ciliated tentacles. A minor phylum.
+ Portuguese Man o' War, Structure: Cnidarians
  * Physalia' look like a jellyfish, but they really are not. The Portuguese Man o' War is not a single animal. It is rather a siphonophore. This is a colony of four kinds of zooids. Zooids are very small, highly modified individuals. These zooids are specialized polyps and medusoids. Grzimek's Animal life encyclopaedia'. Each type of zooid does not have some structure and functions. It depends for survival on the others doing what it cannot do by itself.
+ Siphonophore
  * A siphonophore is not a single animal. It is a colony of four kinds of zooids. Zooids are very small, highly modified individuals. All the zooids in a colony are genetically identical. These zooids are specialized polyps and medusoids. Grzimek's Animal life encyclopaedia'.