1. Blood Flow and Cardiovascular Disease: Relationship between lumen diameter and blood velocity, effects of cardiovascular disease on circulation, and impact on heart function. 2. Evolution and Genetic Inheritance: Genetic variation in shell color of banded snails, role of alleles in determining traits, and adaptation to different habitats. 3. Photosynthesis and Ecosystem Productivity: Role of Calvin cycle, impact of photosynthesis on biomass, and comparison of ecosystem productivity in different environments. 4. Seed Germination and Abiotic Factors: Effect of sodium chloride on rice seed germination, role of gibberellin in stress adaptation, and statistical analysis of germination rates. 5. Genetic Risk of Deep Vein Thrombosis (DVT): Influence of G20210A allele on clotting risk, Hardy-Weinberg calculations for allele frequency, and PCR-based genetic testing. 6. Ion Transport and Cellular Function: Ion concentration differences in human cells, role in nerve and muscle function, and genetic disorders caused by ion channel mutations.