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Life Sci-Chap 19

study guide

List the major components of the water cycle. evaporation, transpiration, condensation, precipitation
Describe evaporation. when water changes from a liquid to a gas
List three types of precipitation. rain, snow, hail
When water rises to the atmosphere changing from gas to liquid - that is... condensation
Describe precipitation. any form of water that falls to Earth from the clouds
Where is most our freshwater found on Earth? under ground
Most of our drinking water is where? under ground
What is transpiration? evaporation of liquids from plants
Water that falls on the land gets to the streams, rivers , and lakes by? runoff
List the components of the carbon cycle. photosynthesis, cellular respiration, decomposition, combustion
The most abundant compound in our atmosphere is? nitrogen
The second most abundant compound in our atmosphere is? oxygen
The element of life is? carbon
Plants give off oxygen during…... photosynthesis
Animals give off carbon dioxide during... respiration
The breakdown of substances into simpler substances is? decomposition
When carbon is burned it is called? combustion
Where is most of nitrogen found in humans? DNA
The process of converting nitrogen into usable form in the soil is called? Nitrogen fixation
The replacement of one type of community by another at a single place over a period of time succession
The first organisms to live in a succession is? pioneer species( lichen - then mosses)
Explain the differences between primary and secondary succession. Primary - establishing new community where none existed before; secondary - existing community is destroyed by a natural or man-made disaster. Primary succession takes much longer than secondary
When life begins where other organisms had not previously lived, that is... primary succession
The original community may regrow after an event is? secondary succession
Well adapted, slow-growing is a ______________ species. climax
A variety of species that are present in an area is referred to as….. biodiversity
List two benefits of the water cycle. Without water, there would be no life on Earth; it supports aquatic life forms
List two benefits of the carbon cycle. During photosynthesis plants use carbon dioxide to make sugars (food); humans benefit cause we use carbon products to fuel our machinery.
List two benefits of the nitrogen cycle. Helps make the soil fertile and it makes up our DNA
Created by: msparks