Use the vertebrate lineage to explain how the cutaneous system (the skin) changed and evolved to life on land. Include which classes contributed key features and advancements. Your focus is on terrestrial vertebrates, but explain the basics of aquatic skin to show where the story started. Include how each change benefited that lineage in terms of their evolution to land (what niches did each new feature allow). HINT: Sometimes it's helpful to think in terms of Pros and Cons of the evolution of a feature. If you know I am looking for a word - bold or underline it.

Hello, I need help answering 5c & 5d using the phylogeny below(letter (A) graph to the left). Pls and thank you! a) In the 1990s, when only mitochondrial DNA sequencing was available, geneticists claimed that there was no hybridization between humans (Homo sapiens) and Neanderthals (Homo neanderthalensis). Does the phylogeny shown above support the claim humans did not hybridize with Neanderthals in the past? How can you tell? b) Once nuclear DNA sequencing became fast and able to handle sequencing ancient DNA, living humans were found to have some Neanderthal genes. Is this finding clear evidence that some early modern humans did indeed hybridize with Neanderthals? Why? c) Did female H. sapiens hybridize with Neanderthal males to produce fertile offspring that then back-crossed with modern humans? What does the graph say about this? d) Did male H. sapiens hybridize with Neanderthal females that then back-crossed with modern humans? What does the graph say about this?…

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Becoming Human worksheet Part I: “First Steps” What is the significance of the discovery of a fossil named Salaam (or “peace” in Ethiopian)?     2. Roughly when was Salaam living and how do we know this?     3. What are the comparisons made between chimpanzees and Australopithecus and how are they significant?       4. What was the climate/environment of Africa like many millions of years ago (say, 6 mya)?     5. According to biomechanist Daniel Lieberman, why did human ancestors become bipedal (walked upright)?     6. What is the Molecular Clock and how does it work?       7. What was the significance of the discovery of Sahlenthropus tchadensis?         8. What evidence is used to suggest that brain development was happening in early human ancestors?         9. What was the climate of Africa like roughly 3 million years ago to 1 ½ million years ago?       10. How are these latest discoveries being used to challenge traditional conceptions of human evolution?

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Circle the letter of the correct response choose the correct answer, then write one sentence to explain your answer. The question is attached below

Answer the following questions: Give examples to support your answers. Elaborate your answer.. 1. Give one method  done by some country to save sea turtles. 2. Discuss why some sa that hemichordates are said to be the missing link between the invertebratesand vertebrates. 3. What is the importance of knowing the marine organisms residing and depending on the oceans? 4. Is there any relationship among fish lice, bird lice, and land mammals, except that they are lice? 5. Differentiate baleen  and toothed whales in four sentences. 6. How do marine organisms especially the animals found in the pelagic affects the populations of certain species in the ocean?

PLEASE help! Thanks! Morphological data can sometimes be misleading in terms of evolutionary relationships. Question: Why can morphological data be misleading? Think about convergent evolution/ environment and the whale, dolphin, hippo relationship)

Please help with these as they are part of 1 question and I am so confused. I really need help like never before and I will highly consider thumbs up but please help asap.    1- Flightlessness in the Rhea may be an example of character displacement. ( choose true or false) 2- The distribution of all four lineages of birds can be explained by vicariance caused by plate tectonics. ( choose true or false) 3- In this phylogeny, flight may have been lost seven individual times. ( choose true or false) 4- The distributions of Tinamous and Rheas are an example of competitive exclusion. ( choose true or false)