GCSE Ecosystems of the planet revision Instructions You

GCSE Ecosystems of the planet revision. Instructions ● You must use your book and revision guide to answer each task. ● The aim is to improve your knowledge recall and exam technique skill. ● You must attempt to use statistics and facts when answering the higher tariff mark questions. ● You must develop your points using phrases such as ‘this means that’ and ‘therefore’ ● Use connectives to link ideas and use key terminology. Name: Target Grade: Teacher:

Ecosystems Revision 1 Answer the three questions below. What is an ecosystem? _______________ What is a biome? _______________ What is the difference between biotic and abiotic? _______________ Describe the climate of this hot desert. ________________________________________________________________________________ ________________________________________________________________________________ • • • Outline the conditions needed for a coral reef to grow:

Ecosystems Revision 2 Study Fig. 1, a diagram showing part of a polar marine ecosystem. (i) Describe how the cod, seal and polar bear shown in Fig. 1 are connected in this ecosystem. …………………………………………………………………………………………… ……… [2] What threats do coral reefs face? • __________________________________________________________________ How are coral reefs valuable to humans and the planet? • __________________________________________________________________ What are threats to the Peruvian Amazon? ______________________________________________________________________ ______________________________________________________________________