Water from rain and snow that travels to streams
Depending on the letters selected, I will use A for normal and a for albinism. the genotype is Aa
Weak acids do not and cannot dissolve in water. They become even more diluted, or watered-down, and become even weaker acids.
Answer: the need of evolution
Explanation: Charles Darwin saw the differences between the birds beaks in the Galapagos island. The beaks were different because of the different food that the environment provides.