What is nekton?

364

---

Explain the three main types of tropic pyramids studied in ecology?

427

---

Explain why is cannibalism an inharmonious intraspecific ecological interaction?

372

---

What is the phytoplankton?

373

---

Explain what is the most abundant form under which nitrogen is found in nature?

331

---

Define the nitrogen cycle?

455

---

How many tropic levels can a food chain have?

492

---

Define parasitism?

360

---

Define eutrophication?

309

---

Define harmonious ecological interaction?

394

---

Explain the main interspecific ecological interactions?

401

---

Explain what are the main limiting factors for the growth of a population?

419

---

Explain why the tropical forests are also known as stratified forests?

428

---

Explain what are fossil fuels?

454

---

Explain the difference between primary ecological succession and secondary ecological succession?

336

---