Lesson: Chapter 15 — The biosphere

15.1. Ecological balance and levels of organisation 2 of 4 Reset answers

Clear all your answers?

This erases every answer in this set and starts you again at question one. Your score will be gone.

Type these four numbers to confirm:

Those numbers don't match. Look at them again and type them.

Yes, clear Keep them

Question 2

Which is a population?

A A pond B A single coconut tree C All the animals of Yala D The elephants living in Sri Lanka in 2011

The right answer is the one marked above.

The elephants living in Sri Lanka in 2011. One species, in one area, at one time.

Answer the question to continue.