How many tropic levels can a food chain have?

464

---

Define parasitism?

318

---

Define eutrophication?

265

---

Define harmonious ecological interaction?

352

---

Explain the main interspecific ecological interactions?

370

---

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

370

---

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

377

---

Explain what are fossil fuels?

409

---

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

311

---

How does gpp relate to photosynthesis?

329

---

If a 16 story building has 12000ft on each floor. Company a rents 7 floors and company b rents 4 floors. What is the number of square feet of unrented floor space?

1054

---

During given week a programmer spend 1/4 of his time preparing charts,3/8 of his time for coding,rest of his time for debugging the programs.if he had 48 hrs during the week how many hours did he spend debugging the program?

1009

---

if card punch operator can process 80 cards in half an hour how many cards can this process in 7hr 30min?

986

---

A computer tape library there are two racks with 40 tapes per rack.in a given day 30 tapes are in use . What fraction remains in the rack?

1416

---

In normal distribution, approximately what percentage of the cases, to the nearest whole number, falls within 4 standard deviations of the mean?

963

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