1. Which of the following is not a microorganism, but helps bread rise in baking? Yoghurt
Yeast
Bicarbonate of soda
Salt

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from

Which example best describes a reflex action? a. eating food when hungry b. coughing when the throat is irritated c. bending down to lift a heavy object d. going for a walk outside

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees