At one point in history, all organisms were classified as either animals or plants. Which question could be asked in order to show the problems associated with this type of model? A How many types animals exist in the world? B Are bacteria considered plants or animals? C Can subsystems further classify the plants and animals? D How is an animal classified? PLEASE HURRY!!!

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Why is permeable soil best for plants that need a lot of drainage?