### definite unit:

Natural ligule
* A ligule natural object
* Ligules are membranous hairless, always short, and truncate.
* Ligules are short, membranous, and jagged
  - truncate, unfringed membranes with teeth near the tip
* Ligules consist of a fringe of hairs
  - short hairs
* Ligules have long, somewhat sparse hairs
  - short dense hairs

### definite unit:

Natural meteoroid
* A meteoroid natural object
* Many meteoroids come from comets, which are made mostly of ice and rock.
* Meteoroids also come from the asteroid belt.
* Meteoroids are celestial objects
  - in orbit around the Sun
  - mostly smaller than a grain of sand but fluffy
  - natural particles in orbit about the sun
  - simply bits of debris in space, too small to be called an asteroid
* Meteoroids are small bodies that travel through space
  - rocky objects traveling through interplanetary space
* Meteoroids are smaller chunks of rock in space
  - pieces of rock and dust that fly around the solar system
* Meteoroids are the particles which can and do fall through the atmosphere
  - same kind of object as meteorites, only they are still in space
  - smallest particles orbiting the sun, and most are no larger than grains of sand
  - tiny stones or pieces of metal that travel through space
* Meteoroids are typically smaller than a grain of sand and much less dense
  - very small and light
  - usually smaller than a grain of sand
* Meteoroids become meteors when they enter Earth's atmosphere
  - visible to observers on Earth when they enter Earth's atmosphere
  - break up into smaller and smaller pieces in Earth's gravity
  - burn up in the atmosphere and fall to the Earth as dust
  - often come from asteroids that have broken up into smaller pieces
  - range widely in size and mass, in roughly inverse proportion to their abundance
* Meteoroids travel around the Sun in a variety of orbits and at various speeds
  - Sun, orbiting in a variety of ways and moving at different velocities
  - vary from small rocks to boulders weighing a ton or more
* Most meteoroids are about the size of a pebble
  - fragments of debris left in the wake of a comet, forming a meteor stream
  - no bigger than a pebble
  - burn up completely on their way into the atmosphere
  - come from asteroids that are broken apart by impacts with other asteroids
  - disintegrate when entering the Earth's atmosphere

Natural object
* Every natural object conductor of divinity.
* Many natural objects have parts that are similar to other parts of it, like the fern.
* are fractals
  - usually a blend of a number of colors
  - wholes
* encourage curiosity and a passion for learning.
* is an unit

Natural physical structure
* A physical structure natural object
* Physical structure refers to a box or bin
  - structures are tools

Natural plant organ
* A plant organ natural object
* All plant organs contain the same three primary tissues
  - play a part in asexual reproduction

### definite unit | natural plant organ | fruiting body:

Aecium
* Aecia are pale yellow to bright orange blisters.
* fruiting body

Magic mushroom
* are a powerful, naturally occurring hallucinogenic
  - hallucinogens
  - organic hallucinogens that have been used for thousands of years
* can cause panic attacks.
* have a distinctive smell and taste, which most people find unpleasant.

### definite unit | natural plant organ | reproductive structure:

Ascus
* Asci are difficult to see, but their outlines are readily visible
  - transparent cylindrical sacs that each contain eight ascospores
  - develop from outgrowths of the ascogonium, which is designated the female gametangium
* Many asci arise from hook-like structures called croziers.
* Most asci have a pore or channel at the apex that serves as the exit point for the ascospores
  - the ability to shoot their ascospores away from the parent fruiting body
* reproductive structure