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I’m planning to write a post-apocalyptic story about the adventures of animals living after humanity destroys itself in a nuclear war. I’ve decided to have many of the general groups of invertebrates, amphibians, and reptiles survive in my story, but I’m having more trouble deciding on what types of fish, birds, and mammals would live.
The fish that I decided that I would use so far are the ones like lobe-finned fish, sharks, rays, jawless fish, seahorses, and mummichogs, but I can’t think of much else, because don’t know the exact nature of the impact that an event like this would have on modern marine life. With mammals I’ve got species like rodents, shrews, bats, pigs, wolves, and honey badgers, but again, I’m stuck. Birds are the ones that are giving me the most trouble, crows are actually the only birds that I’ve really decided on so far. So what other kinds of birds are likely to be post-apocalyptic survivors?
Also, what types of animals would likely evolve to replace large land predators if those were to go extinct? It’s just that I once read an old speculative biology book about how animals may evolve 50 million years in the future, and it had rats replace the large predators, but I also read on the Internet that there were more likely candidates to fill in that niche, but I don’t know exactly which.

i forgot my biology book at school and i need help with these questions. any answer helps, i prefer complete sentence if you are willing, but if not, thanks anyway. so here are the questions.
1 What is ecology?
2 define: species; population; community; ecosystem; biome; biosphere;
Tell how these are related.
3 How is a habitat different from a niche;
4 What are biotic and abiotic factors?
5 What is the Competitive Exclusion Principle?
6 How is the movement of matter AND energy through an ecosystem different?
7 What are autotrophs? Give examples. What are heterotrophs? Give examples.
8 Name two ways autotrophic organisms can make their own food. How are these different?
9 What is a resource? A food chain? A food web? How are these related?
10 What is an herbivore, carnivore, omnivore, detritivore, decomposer,scavenger?
11 How do they get their energy? Be able to give examples of each of these.
12 What is a trophic level? What percentage of energy is passed on from one trophic level to the next?
13 What is a biogeochemical cycle?.
14 How do (water, carbon, nitrogen, phosphorus) atoms enter and leave the atmosphere, land, water, and cycle through the ecosystem?
15 In which cycle does the atmosphere NOT play a role?
16 Which biomolecules are important to living things and which cycles provide the atoms to build these?
17 What is transpiration? Nitrogen fixation? Denitrification? Evaporation? Condensation? Precipitation?
18 Which organisms play a role in these processes?
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19 NAME the 6 levels or organization that ecologists use
20 What are the ways organisms interact in an ecosystem? Define:(Competition, Predation, Symbiosis)
21 Name the 3 kinds of symbiosis? Identify examples of each?
21 What are some things organisms must compete for?
22 What is a limiting factor? How does it affect a population?
23 What is primary productivity? An algal bloom?
24 What happens when an over abundance of a limiting factor becomes available?
25 How do organisms cooperate? What is predation? What is a predator? Prey?
26 What are the 3 kinds of symbiosis? Be able to identify examples of each?
27. Name the two things that can affect the size of a population
28. What is exponential growth? Under what conditions does it occur in a population?
29. What is logistic growth?
30. Give two examples of density-dependent limiting factors? What does this type of limiting factor
rely on?
31. What is the difference between primary and secondary succession?
32. What kind of growth is represented by a S curve (as opposed to a J curve)
33. Explain the difference between a resource that is renewable and nonrenewable.
you do not have to answer all of them (you’d be AWSOME if you did though(: ) but try to answer one that hasnt been answered yet. THANK YOU!(: