1 The community of inter-related animals and plants in a location. (9)
  3 The process of keeping food over a period of time so it does not rot. (12)
  8 The name for when seeds sprout. (11)
  9 When an animal goes to sleep over the Winter. (11)
10 When an animal is active at night-time, such as owls or bats. (9)
11 The process of making energy from light, used by green plants. (14)
12 Large lizard-like creatures that lived millions of years ago. (9)

  2 The process of putting things into groups by their characteristics. (14)
  4 To keep food fresh by keeping it cold. (11)
  5 Animals without a backbone. (13)
  6 Animals that have a backbone. (11)
  7 An animal that eats plants rather than other animals. (9)