### period | season | spring:

Coil spring
* have many automotive applications but are particularly important as suspension springs.
* is spring.

### period | season | spring:

Early spring
* brings many of the viruses that cause skin rashes.
* determines the impact of salp population on krill.
* is also a good time to plant summer bulbs and bulb-like plants
  - the period when most common termite species swarm
  - often the period when adult stages are most frequently encountered in homes
  - one of the easiest times to catch largemouth bass
  - similar to winter
* is the best time to apply an insecticide to control mites
  - divide perennials that bloom in late summer and autumn
  - fertilize fruit trees
  - plant disease-free raspberry bushes in clean soil
  - most likely time to encounter insect pests in winter vegetables
  - second-best time to plant garlic
* is the time to plant begonias, impatiens marigolds and geraniums
  - new vines
  - shear the foliage back to the green growth at the base of the plant
  - when poisonings due to low larkspurs are most likely to occur
* signals the arrival of ospreys who have spent the winter months in warmer climates
  - start of termite season and carpenter ant nesting activity

### period | season | spring:

Geyser
* Most geysers are hot springs that episodically erupt fountains of hot water and steam
  - episodically erupt fountains of scalding water and steam
  - erupt irregularly and infrequently
* Some geysers die because their water or heat source change, move or disappear
  - erupt every minute, and others are inactive for months or even years
  - just bubble and give foot high bursts of water and steam
* are a manifestation of volcanic activity
  - extremely rare on the planet earth
  - fragile, temporary, geologic features
  - springs that erupt periodically
  - known to have existed in at least a dozen other areas on the island
  - made in special geological conditions
  - natural things
  - often near active volcanos
  - physical phenomenons
  - quite rare, requiring a combination of water , heat , and fortuitous plumbing
  - relatively rare geologic occurences
  - significant in many ways
  - springs that throw forth intermittent jets of water and steam
  - sudden spurts of hot water
* are temporary features geologically
  - geological features
  - used for various activities such as electricity generation, heating and tourism
  - usually near volcanic areas
  - very transient phenomena
* display many anomalies.
* erupt with varying regularity depending on the condition of their underground passageways.
* fume near glaciers.
* is spring
* maintain a delicate balance between water and steam.
* occur when there strong steam vent in an area of actively flowing groundwater.
* require a specific set of conditions in order to form
  - steady floow of groundwater
* shoot out from under the ground.
* spew dark plumes into Triton's thin atmosphere.
* spout pale plumes of ethane high into the sky.
* tend to have bursts.
+ Geyser, Causes, Form and function
  * Individual geysers do not last forever, but 'systems' of geysers last as long as the geological situation continues. The oldest individual geysers are only a few thousand years old. Geysers are usually near volcanic areas
  - Causes: Geology
  * Geysers are made in special geological conditions. Only a few places on Earth have these conditions. Because of this, geysers are not very common. One place is the Yellowstone National Park, which is the remains of a gigantic volcano. Another is Iceland, which sits on top of the Mid-Atlantic Ridge, where new Earth's crust is formed.
  * Geysers are often near active volcanos. This is because the geyser is caused by magma. Surface water usually goes down to about. There, it mixes with hot rocks. The pressurized water begins to boil. When it is pressured enough, hot water and steam burst out of the geyser