Carbon dioxide may affect organisms directly or indirectly. Describe and explain these effects.

Carbon dioxide may affect organisms directly or indirectly. Describe and explain these effects.

1. Carbon Cycle

   • saprobiontic nutrition, decomposers, photosynthesis, respiration, combustion, deforestation etc..

2. Photosynthesis

   • plants can photosynthesise... produce glucose for respiration and therefore survive
     • organisms live of producers. therefore without CO2 --> no producers --> no organisms survive
   • use the glucose to produce yield like berries and fruits

3. Global Warming

   • CO2 increased, mid 1800 288part per million/ 380ppm 2000.
     • CO2 released from destroyed carbon sinks..
     • increase crop yield , photo.. more , CO2 not limiting factor
   • can change the life cycle of of some insects. SOME INSECTS GO THROUGH LARVAL STAGE EARLIER AND EMERGE ADULTS SOON... EVERY INCREASE 1 CELCIUS,, SOME BUTTERFLIES 10/LESS IN LARVAE STAGE
   • number of species vary. WARMER + WETTER SUMMERS INCREASE MOSQUITO POP. TOPICAL INSECTS ONLY THRIVE IN SPECIFIC TEM RANGES, TOO HOT --> UNABE TO REPRODUCE SUCCESSFULLY
   • distribution of wild animal and plants: SPECIES WARMER TEMP SPREAD FURTHER AS CONDITION THEY THRIVE IN EXIST OVER A WIDER AREA
   • change number of species BOARFISH INCREASING IN NUMBER IN PARTS OF ATLANTIC OCEAN WHERE SEAS TEM IS RISING
     • POLAR BEARS NEED FROZEN SEA, GLOBAL WARMING --> MELT. DECREASE IN HABITATS,......

4. Haemoglobin

   • BOHR EFFECT: Haemoglobin more readily gives up O2 at higher partial pressure of CO2.
     • because CO2 increase pH, changes shape of haemoglobin
     • means there is a sufficent supply of O2 to respiring cells - as they respire more, more CO2, more readily O2 given.