What three things do cells / organisms have to do to maintain homeostasis? from food, get rid of and /meiosis).

Apiece of metal 75g at 110°c is dropped in a container with 500g at 20°c. the h2o if temperature is 24°c find specific heat capacity of metal

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class

Element with 3protons and 5neutrons