Define biosphere?

535

---

What are tropic levels?

356

---

Define a food chain?

428

---

Which type of energy is the light used in photosynthesis transformed.

313

---

Define inharmonious ecological interaction?

448

---

Define population density?

368

---

What is the typical fauna of the tropical forests?

441

---

Explain the main types of waste?

339

---

Define transgenic food?

409

---

Explain the main factors that affect the growth of a population?

370

---

How does net primary production relate to the energy pyramids?

460

---

What are colonies?

404

---

What is plankton?

509

---

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

298

---

What are interspecific ecological interactions?

434

---