What is population?

290

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What is the main means by which autotrophic beings obtain energy?

259

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What is the typical shape of a population growth curve? How the biotic potential can be represented in the same graphic?

267

---

What is the cost-benefit relation regarding sewage treatment as a strategy to fight water pollution?

257

---

What is the climax stage of an ecological succession?

337

---

How are ecological interactions classified?

250

---

Besides mercury which other heavy metals cause toxic pollution?

234

---

What is selective waste collection?

345

---

What is plutonium reprocessing? Why is it a big environmental issue?

279

---

What are persistent organic pollutants (POPs?

317

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Why the tropical forests are also known as stratified forests?

244

---

What is competition? Which type of ecological interaction is competition?

331

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How does the vegetal stratification of an ecosystem influence the biological diversity?

301

---

What is population growth rate?

291

---

What are the typical vegetation and the typical fauna of the taigas?

344

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