Which one is the right

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

What are the genotypic and phenotypic ratios

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .