• Which trees give us a sweet, sugary syrup?
  The sugar maple has a sweet sap, which is harvested to make maple ...

• What prevents the tall trees from blowing over?
  Many of the taller forest trees have special supporting flanges near ...

• Why are the tropical rainforests so rich in species?
  No one knows for certain, but it may be because they have been ...

• What is an air-plant?
  An air-plant grows without anchoring itself with roots. Air plants ...

• What do we get from rainforests?
  We get many things from rainforests, including timber, Brazil nuts, ...

• How are wetlands damaged?
  When soil is drained, or too much water is pumped from the land ...

• Why do some lakes have very few plants?
  Lakes vary in the chemical composition of the water that they ...

• Why is the water hyacinth sometimes a problem?
  Water hyacinth is a floating plant with beautiful mauve flowers. ...

• How does a lake turn into land?
  Over time, a lake will gradually turn into dry land by a process ...

• How old can forest trees get?
  Many forest trees reach a great age, notably oaks, which have been ...