Skip to content
S
Salam Academy
Learn
Past papers
Practise
Exam info
Search
Learn
Past papers
Practise
Exam info
Search
More ▾
Dark mode
Sign in
Create account
Learn
Edexcel
YBI11
2018 specification
WBI14
WBI14
Unit 4: Energy, Environment, Microbiology and Immunity
Energy flow, ecosystems and the environment
Natural selection and population genetics · Light-dependent reactions · Speciation and evolution · Calvin cycle and limiting factors · Ecosystems, energy and nutrient cycles
5 subtopic lessons
Microbiology, immunity and forensics
Infectious diseases and antibiotics · Immune response and vaccination · Microbial growth and forensics
3 subtopic lessons