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Explain the differences of paedomorphosis and peramorphosis using the figures and include concrete examples each.
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- What type of fish scales regenerate fast? What type of aquatic environment they are in? Are they the ones that will most likely survive? why?Describe how metamorphosis changes the structures involved in gas exchange over the life cycle of animals in the clade Anura, and what evolutionary advantage this change provides.Give three characteristics of lizard's death?
- Why can the amphibiancirculation be classified asdouble and incomplete?Only eight species of lobe-finned fishes are alive today, remnants of a group that flourished in the Devonian period of the Paleozoic era. What morphological characteristics distinguish lobe-finned fishes? What is the literal meaning of Sarcopterygii, the taxon comprising lobe-finned fishes and tetrapods?How does cryptobiosis in tardigrades increase the likelihood of survival?
- Describe the acrosomal reaction in an echinoderm like the purple sea urchin, Strongylocentrotus purpuratus.Help me please Look at the size of molar teeth, the degree of zygomatic flare and the presence or absence of a sagittal crest as detailed on the above chart. What do these three features together tell us about the dietary habits of Paranthropus vs. dietary habits of Australopithecines (what were they eating)?