Explain why modern dogs look different from their common ancestor (Wolf).

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.