A swan is born with stronger wing muscles that allow it to fly faster and for longer periods of time. This allows it to flee from predators more easily, and find food and mates more quickly. What event caused the swan to be
born with this trait?

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.

that's all i luck!

i would think it's dendrites