(Question)
If body fat is unused energy, then what not digested is used as energy storage? Answer choices: - RNA - Urea - fat - glucose - carbohydrates - food - protein - DDT
(Answer)
fat

(Question)
If salmon have a circulatory system with a two-chambered heart, then what has a circulatory system with a two-chambered heart? Answer choices: - sharks - insects - salmon - animals - barnacles - mammals - tortoises - alpacas
(Answer)
salmon

(Question)
If cells are grouped into tissues, and tissues form the kidneys, then what do tissues form? Answer choices: - the skin - ferns - clouds - density - alveoli - kidneys - h2o - perennials
(Answer)
kidneys