There are many kinds of pond, but nearly all are small bodies of shallow, stagnant water in which plants with roots can grow. Water movement is slight and temperatures fluctuate widely. The wealth of plants ensures that during daylight hours oxygen is plentiful. However, at night, when photosynthesis no longer takes place, oxygen supplies can fall very low.
PTELook at the text below. In 35 seconds, you must read this text aloud as naturally and clearly as possible. You have 35 seconds to read aloud.
Recorded Answer
Current status:
Beginning in 35 seconds.