Adaptation, Competition and Environmental Change
- Created by: isabella newsum
- Created on: 16-11-14 10:29
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- Adaptation, Competition and Environmental Change
- Desert Animals
- Large surface area compared to volume- lose body heat
- Efficient with water- lose less by producing small amounts of concentrated urine, sweat very little
- Good in hot conditions- thin layers of body fat and thin coat to help them lose body heat
- Camouflage- avoid predators or sneak up on prey
- Arctic Animals
- Small surface area compared to volume- compact shape, reduce heat loss
- Well insulated- think layer of blubber which acts as an energy store
- Camouflage- avoid predators or sneak up on prey
- Desert Plants
- Small surface area compared to volume- lose water vapour from surface of leaves, Cacti- spines- reduced water loss
- Water storage tissue- cactus stores water in its think stem
- Maximising water absorption- some cacti have shallow but extensive roots to absorb water quickly over a large area, others have deep roots to access underground water
- Microorganisms
- Some are known as extremophiles- adapted to to live in extreme conditions or at high pressure
- Competition
- Compete to survive and reproduce
- Plants- light, space, water and minerals
- Animals- territory, food, water and mates
- Compete with other species for the same resources
- Environmental Change
- Living factors- change in a) occurrence of infectious diseases b) number of predators c) number of prey/ availability of food sources d) number/types of competitors
- Non-living factors- change in a) ave. temp. b) ave. rainfall c) level of air/water pollution
- These factors can cause the population size to increase, decrease or the population distribution change
- Desert Animals
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