### plant | tracheophyte | cactus:

Sahuaro
* Many Saguaros have several large arms curving to the sky in a unique pattern
  - saguaros show extensive scars from life in the desert
* Most saguaros grow from seeds.
* Most saguaros have branches
* Saguaros are a very slow growing cactus
  - bellwether indicators of the health of the ecosystem
  - easy to damage, hard to kill
  - good examples of the temporary, ever-changing nature of plant distributions
  - popular for landscaping
  - prey to a variety of ills besides bad weather
  - unique cacti
  - vulnerable to bacteria and yeast infections
  - bear white flowers and an edible fruit
  - begin as tiny black seeds, shed by the tens of thousands every year by each mature cactus
* Saguaros can live for several centuries
  - nearly two hundred years
  - occasionally develop in a grossly distorted way, termed mostrose growth
  - die from different causes at different sizes
  - grow slowly from seed, never from cuttings
* Saguaros have a relatively long lifespan
  - an invisible root system that is multiples of the visible height of the cacti
  - make their own food with soaked-up water and carbon dioxide
* Saguaros provide habitat for several animals
  - high rise dormitories for a number of desert dwellers
  - nesting habitats for birds and small mammals
  - remain vulnerable to environmental damage throughout their lives
  - reproduce in infrequent, periodic surges when a set of complex conditions are met
  - soak up the rainwater and visibly expand
  - take a very long time to grow
  - tend to favor bajadas, large plains which are gernally flat but mildly sloping
  - thrive on desert slopes and flats
* Some saguaros adapt to desert habitats
  - subtropical habitats
  - grow in containers
* Some saguaros have arms
  - fruit production
  - lower fruit production
  - stamens
* Some saguaros produce crops
  - juicy fruit
* Some saguaros produce red fruit

### plant | tracheophyte | cactus:

Tuna
* Most tuna contains mercury.
* Most tuna feeds on fish
  - small fish
* Most tuna has fins
  - muscles
  - spiny fins
* Most tuna reaches maturity
  - sexual maturity
* Some tuna attracts ants
  - has streams
  - tunas have specialized grooves in their tongue
* achieve endothermy by conserving the heat generated through normal metabolism
  - through high metabolic rates and low rates of body heat loss
* adapts to environments.
* are agile predators, often feeding on smaller, particularly schooling, fishes
  - one of the most consumed fish species
  - over-fished in different parts of the world, especially in Japan and Australia
  - the fruits that bulge out at the end of the nopalitos
  - unique among bony fish in their ability to keep key parts of their body warm
* can travel large distances in a short period of time.
  - prey
* food fish
* gills inside of the head.
* grades integrate effects of harvesting, handling and storage on fish quality.
  - instinct
* has strong home instinct
* have a more streamlined body and the motion at the tail acts almost like a propeller
  - excellent eye sight and are very often line shy
* includes cell membranes
  - cells
  - corpi
  - cytoplasm
  - nuclei
  - peels
  - plasma membranes
  - sections
  - vacuoles
* is eels
* is located in cans
  - markets
  - oceans
  - water
  - meat
  - part of tuna
  - prickly pears
  - saltwater fish
* like to race around at high speeds with dolphins - no one knows exactly why.
* provides food.
* survives in water.

### plant | tracheophyte | cactus | tuna:

Canned tuna
* comes packed in either water or high-fat oil.
* is located in pantries
  - one of nature's healthiest and pure foods
  - packed in either water or oil-the latter containing far more calories