How does net primary production relate to the energy pyramids?

398

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What are colonies?

354

---

What is plankton?

463

---

Explain why transgenics are considered a threat to the environmental safety?

248

---

What are interspecific ecological interactions?

376

---

Explain the main chemical compounds that destroy the ozone layer?

275

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What are primary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?

303

---

Explain the main causes of the loss of the biological diversity nowadays?

287

---

What are primary consumers? Can food chain present quaternary consumers without having secondary or tertiary consumers?

407

---

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?

286

---

Explain the primary energy source for life on earth?

321

---

What is the typical vegetation of the tropical forests?

330

---

What are primary consumers?

398

---

Explain how are grasslands classified?

354

---

What are societies?

299

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