Your teacher gives you an unknown bacterium to observe. Select the method that would help you determine whether the bacterium is a chemotroph. exposing the bacterium to carbon dioxide to see if it fixes carbon

growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down

exposing the bacterium to direct sunlight to see if it converts light to chemical energy

growing the bacterium in an agar tube filled with protein to see if it breaks the organic molecules down

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates