The answer is that are small
Biologists consider genetic drift as a random change in a gene variant due to random sampling organism
If youd stop breathing for so long youd die
It must be able to replicate it's DNA
For future reference, please organize your questions better :)
Autotrophs are the producers, i.e. plants (they make their own food) so they gain their energy by converting light energy into chemical energy through the process of photosynthesis. Whereas heterotrophs (animals) cannot make their own food so they obtain nutrition through the consumption of autotrophs and other heterotrophs.
The symptoms given above are associated with CYSTIC FIBROSIS.
Cystic fibrosis is a genetic disorder that usually affect the lungs, but it can also affect the liver, pancreas, intestines and the kidney. Symptoms include difficulty in breathing, coughing up of mucus, etc. The disease causes persistent lung infections and limit the ability to breath over time.
