Answer:
1. Each Giraffe's neck length is different
2. The tall neck Giraffes reproduced and their off spring inherited their genes
3. A drought occurred.
Explanation:
Liters/cl/ml/dl for liquids and cubic meters/cm/mm/km for solids
Well to begin with this process is called genetic engineering, the scientists altered the DNA of the chickens instead of altering a protein already in the chickens because when you alter the DNA the offsprings of the chicken will will have the same qualities while if you only alter the protein already in that chicken only that chicken will be able to do the job
