How did the allele for “long-neck” giraffes arise in the population?

Here's link to the аnswer:

xlnk․cf/tcMG

every el niño cycle is different. every year.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).