What is the difference between the concepts of food chain and food web?

330

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In the short range what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies?

501

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What is eutrophication?

441

---

What is a biome?

426

---

What is transgenic food?

370

---

What is the water cycle?

415

---

What is the primary energy source for life on earth?

394

---

How are grasslands classified?

358

---

What is inharmonious ecological interaction?

334

---

What is environmental resistance?

388

---

Is monoculture a system that contributes to great biological diversity of an ecosystem?

429

---

Why waste is considered one of the major environmental issues?

430

---

What are the three main types of tropic pyramids studied in Ecology?

357

---

What are primary consumers? Can food chain present quaternary consumers without having secondary or tertiary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?

406

---

Which terrestrial vertebrate group is extremely rare in deserts?

348

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