### animal | mollusk:

Aquatic mollusk
* breathe use gills.
* use gills located in their mantle cavities.

Freshwater mollusk
* Most freshwater mollusks have global significance
  - shells
* Some freshwater mollusks adapt to problems
  - live in regions

Marine mollusk
* Most marine mollusks have shells
  - spiral shells
* are locally abundant within the deposit.

Terrestrial mollusk
* Most terrestrial mollusks have shells.
* Some terrestrial mollusks develop cavities.

Morula
* ball-like mass of cells formed by the cleavage of the zygote.
* includes brains
  - cell membranes
  - corpi
  - cytoplasm
  - ears
  - faces
  - heads
  - nuclei
  - plasma membranes
  - sections
  - skulls
  - vacuoles

Most terrestrial animal
* excrete waste.
* have lungs.

Multicellular animal
* Most multicellular animals have excretory organs
  - special organs
  - reproduce sexually
  - undergo a similar pattern of development and differentiation
  - nervous systems that generate behavior
* need oxygen.

Native animal
* All native animals are resources of inherent interest and value to the people of the United States.
* Many native animals live underground as a way to adapt to the harsh arid climate.
* Most native animals adapt to environments
  - are marsupials the young of which are nourished in an external pouch
* Most native animals depend on grassland
  - plants
* Some native animals prey on bandicoots.

Neutered animal
* Many neutered animals show a higher percentage of allergies and skin problems.
* are less likely to be aggressive or to bite humans.
* are less likely to roam and fight
  - therefore less likely to contract diseases
  - or fight
* fight less, reducing injuries and the spread of disease.
* tend to be less territorial and less aggressive.

Newborn animal
* are most susceptible to infection
  - young animals
* have far fewer neurons that respond to hypoxia than do adults.
* receive protection from antibodies in their mothers' milk.

### animal:

Nocturnal animal
* Most nocturnal animals become prey.
* Most nocturnal animals have big eyes and pupils that let in as much light as possible
  - look for food
  - rely on senses
  - use senses
* Some nocturnal animals avoid heat
  - come out at nights
  - have eyes that can see the infrared light produced by their prey or enemies
* Some nocturnal animals hide in crevices
  - holes
  - moist crevices
  - leave burrows
  - live on slopes
* are a favorite to read and learn about.
* are active at night
  - by night and sleep during the day
  - awake at night and asleep during the day
  - more active just after dark and just before dawn
  - up and active
  - usually active during the night
* begin to wake up and move around.
* can have big eyes and even bigger ears.
* climb out after dark.
* do come out during the day
  - it the other way round
* have a structure in which human lack called tapetum
  - larger corneas iii
  - proportionally larger eyes than humans do
  - specialized pupils to shut out damaging bright light
* hunt for food.
* seen during the day are likely to be sick or injured.
* take center stage.
* tend to have larger eyes for better night vision
  - proportionally bigger eyes than diurnal animals and human beings do
+ Diurnal: Zoology
  * Animals that are active during the day are called 'diurnal'. They hunt or feed during the day and sleep during the night. Nocturnal animals do it the other way round.

Nonhuman animal
* are on one level.
* can suffer.

Numerous animal
* are full brothers and sisters and have minimal similarities
  - pregnant
* live in close association with feather stars
  - within extreme temperature gradients
* perform seasonal migrations through the state.

Old animal
* appear more vulnerable than young animals.
* die and are removed.