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B1 Chapter 4 Continued- Adaptation For Survival (Measuring Environmental…
B1 Chapter 4 Continued- Adaptation For Survival
Competition In Plants
Compete for water, nutrients, light
Deep roots- reach water easier
Some spread seeds over wide area
Do not compete with each other
Use animals to spread fruit and seeds
Some use wind or mini explosions
How Do You Survive
Plants and animals unusual adaptations
Female fig wasps-special shaped heads for getting inside fig tree flowers and ovipositors to place eggs
Star nosed mole- underground- almost blind- sensitive to touch and smell
Venus fly traps- insect eating plants- sweet, sticky nectar, bright red inside
Measuring Environmental Change
Affected by environment- change- may not survive
Non living factors
Temperature
Rainfall
Light
Oxygen levels
Living factors
New predators
Disease
New plants providing new food or habitats
Pollution indicators and monitoring
Lichens- indicate level of air pollution, more lichen cleaner air- indicator species- indicate changes in environment
Fresh water invertebrates- indicate level of water pollution- concentration of dissolved oxygen in water- wider range, cleaner water- some only live in polluted water
Rain gauges, thermometers, pH, oxygen sensors and data loggers monitor non living changes in the environment
The Impact Of Change
Changes in environment affect distribution of living organisms
Sometimes difficult to determine what is affecting organism
Bird may fly north is climate gets hotter other birds may then have new competitors
Large fall in bee population may have been caused by several factors - use of chemical sprays, viral disease, change in flowering patterns