After you swallow, the bolus (ball of food) moves down this tube. Peristalsis – wave-like muscle contractions – pushes the food toward the stomach. This happens even if you are standing on your head!
: Key ecological principles and interactions within ecosystems. Key Features
: Mechanics of transport in flowering plants (vascular systems, transpiration) and animals (blood circulatory and lymphatic systems).
Use the ZASE textbook to look up topics you struggle with while practicing with official ECZ past papers.
The textbook is strategically divided into thematic units that progress in complexity across the three grades. Grade 10: The Building Blocks of Life
, many students access digital versions via educational platforms like Slideshare for quick revision on the go.
: The content is designed to align with national standards, making it a primary resource for students preparing for the Zambian grade 12 examinations.