Always try to solve the textbook problems independently before checking the link.
Aristo Science for New Century is a widely used textbook series for Junior Secondary forms in Hong Kong. Book 1A covers introductory science concepts typically taught in Secondary 1 (Grade 7). Key topics include: Introducing Science and laboratory safety Looking at Living Things (cells and classification) Cells and Human Reproduction aristo science 1a answer link
A broader set of assignment answers for the 1A workbook is hosted on Course Hero Unit 3 (Looking at Living Things): Always try to solve the textbook problems independently