Transitional species - fire island ak split


Take for example the Kakapo, an animal which evolved without natural predators and thus didn’t require instincts to defend itself. Unfortunately — and as is the case with most of the species showcased here — humans began easily hunting upon encroaching their range, then introduced the stoat and other forms of pest control for other species. The Kakapo was almost completely wiped out through this introduction and fights on today because of this catastrophic lack of judgement.

Perhaps the best known sea turtle is the leatherback. Guided by an unfathomable instinct, the pregnant animal emerges from the surf after dark, close to high tide. Laboriously she crawls up the beach, selects a site just beyond the high-water mark and starts to dig. Her front flippers scoop out a cavity for her body. The rear flippers then excavate a smaller, deeper hole. Typically she deposits around 70 fertile eggs and 40 smaller infertile ones. Her duty done, she fills the nest with sand to conceal its location and returns to the sea. She will never know her infants.

According to the theory of evolution, the "descent with modification" road to humans (or any other group, for that matter) is paved with a sequence of transitional fossils, spaced out in a time sequence reflected in the ages of the fossils found. Since fossils of soft-bodied animals are relatively rare (they don't fossilize easily), the record is rather spotty prior to the first appearance of vertebrates (in the form of jawless fishes), so this lesson will focus only on the fossil record of vertebrates


Transitional Species - Fire Island AK SplitTransitional Species - Fire Island AK SplitTransitional Species - Fire Island AK SplitTransitional Species - Fire Island AK Split

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