Here are some links that has information about the environment. Have a read and look for key words from your science student book.
https://kids.britannica.com/kids/article/environment/399445/related#nodeId=main&page=1
Kids News - Green Article
Here you can find a wide variety of online resources that you can use to support your child at home.
BiteSize Science Activities: http://www.bbc.co.uk/bitesize/ks2/science/
BiteSize Review: http://www.bbc.co.uk/education/subjects/z2pfb9q
CrickWeb Review Activities: http://www.crickweb.co.uk/ks2science.html
Science Kids Activities: http://www.sciencekids.co.nz/gamesactivities.html
Interactive Sites For Education (Science): http://interactivesites.weebly.com/science.html
National Geographic Kids: http://kids.nationalgeographic.com
KidsTryScience Experiments: http://www.teacherstryscience.org/kids-experiments
PBSKids Science Activities: http://pbskids.org/games/science/