How can natural selection account for the long necks of giraffes?

Due to natural selection, the long-neck trait survived and was able to pass on the long-neck allele because there was enough food for these giraffes to survive. Alternatively, the short-necked giraffes were eliminated because the short-neck trait prevented them from obtaining a sufficient amount of food in order to survive.

bai :>

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation: