Which is the best explanation of how catalysts are used in chemical reactions? A. Catalysts are need for every chemical reaction to get started

B. Each catalysts can only be used once we are given the chemical equation

C. Catalysts lower the activation energy for chemical reaction to start

D. Each catalysts see I can find with a few different substrates to get chemical reactions to started faster

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

The first three phases of the cell cycle are collectively known as (1 point) play audio cellular respiration. telophase. mitosis. interphase.