General Science - Questions and Answers

2376. The commonly present elements in artificial fertilizers are

2377. Biodegradable wastes can usually be converted into useful substances with the help of

2378. All the ecosystems taken together in a geographical area form a bigger unit called

2379. Oncogenes are

2380. Which of the following have not undergone much of a change during the process of evolution over millions of years ? 1. Crocodile 2. Cockroach 3. Horse