Vegetation

When i first hear the words , "natural vegetation", i was thinking, "hmmmm. it  must be some boring chapter about bushes and trees growing naturally " But, oh well, looks like theres more to that in natural vegetation!

NV-vegetation that has grown natually and not man-made.
Why is NV important to us?
- provides oxygen
-home to some animals
-medicinal properties of some trees
-makes Earth looks pretty ( thats what i think, but yeah :D )

in total, there are 7 types of NV.
1. tropical rainforest
2. temperate deciduous forests
3. temperate coniferous forets
4.tropical savannahs
5. temperate grasslands
6. hot deserts
7. cold tundras



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Effect of W&C on NV
-temp: affects rate of vital processess ion plants
-rainfall: for survival/photosynthesis

* The NV will adapt to the climate by having necesary and different characteristics.

for example:
the NV in the tropical rainforest will have characteristics like:
-having waxy,drip-tip leaves
-braod surface
-hairy surface
-high density and biodiversity
-sparse undergrowth

whereas, the NV in a TDF:
-thin,delicate leaves
-broad leaves
-thicker and fuller canopy crowns during summer
-thick,rough barks
-shed leaves during autumn

the NV in TCF:
-cone-shaped crowns
-supple/flexible branches
-small,needle-like leaves
-evergreen
-thick barks
-shallow root systems
- hard leathery fruits

* adaptations are related to surviving
* adaptations are related to the changes in climate

Climate.... how much do you know about them~

Climate, is about a long-term trend of the weather over a long period of time. The elements of weather plays an important role of how the world's climates are classified into. there are 3 types of climates:
1. tropical
2.temperate
3. polar
  these three climates are distributed differently on the map.
For the tropical climate:
latitude- near the equator, between tropic of cancer (23.5degrees N), tropic of caricorn (23.5 deg S).
characteristics-temp:20-30 degC throughout, high rainfall, 1000-2000mm annual rainfall.
the reason why the its hotter in a tropical climate, is because, the countries are at the equator, so when the sun rays strike the earth's surface, sun rays are concentrated over a small area, thus heat is more intense.

temperate climate:
latitude- betwwen tropic of cancer and arctic circle, between tropic of capricorn and antarctic circle.
characteristics- 4 seasons in 1 year, temp: 34degC, winter, below 0degC ( not constant ), moderate rainfall, 300-1000mm annually.
 in a temperate climate, precipitation and temp fluctuate a lot, unlike the tropical climate.

polar climate:
latitude-between arctic circle and north pole, between antarctic circle and south pole.
characteristics- 4seasons in a year, temp: summer ( below 0degC), winter:( lowest of -89.2degC) , low rainfall of 110 mm annually, when N.hemisphere tilts towards the sun, 24 hours of sunlight at N.pole while the S.pole is in total darkness!


The question Ms J asked was can climate changes fluctuate in the same way weather conditions vary daily?
Now, heres my answer :
  Well, weather changes on a daily basis/hourly basis, but climate is the weather trends over a long period of time. thus, climate changes cannot fluctuate in the same way because it remains consistent for decades maybe even centuries. So, nope, it cant. climate changes cant change and vary like the weather conditions.

Weather

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What is weather?

. Weather is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy.Weather is the change of temperature over a short period of time(daily). Weather is driven by density (temperature and moisture) differences between one location and another. Weather differs depending on where somebody is(location) These differences can occur due to the sun angle at any particular spot, which varies by latitude from the tropics. The equator and the area near the equator are closer to the sun, thus it is it is much hotter there. ( sun rays travels shorter distance-more intense heat)

 The elements of weather :

-temperature(hot or cold)

places near the equator(latitude)

mountain tops(altitude)

when the earth rotates, some places are dark, while some are exposed to sunlight. rotation causes different locations to experience different temperatures. 

-rainfall(wet or dry)

the hydrologic cycle, precipitation, the amount of rain received in a place. 

(some places may experience a lot of rainfall,while some places experience a lot of sunlight.)

-wind(air pressure)

movement of air 

wind moves from areas of high pressure to areas of low pressure. 

high pressure: air particles, compact, higher amount of force

low pressure: air particles, far apart, lower amount of force

how do the weather elements affect the way we live:
 -it affects the type of clothes we wear( in singapore, we wear shorts, slippers, tank tops)
-outdoor activities
-perspire
-schooling and work
-natural disasters