Franklin's approach to the DNA problem was painstaking and methodical. She clearly eschewed guesswork. Watson and Crick, on the other hand, did no labor intensive experiments, ventured many guesses about the DNA structure based upon the results of other scientists, and finally triumphed because this informed speculation allowed them to build a model that uniquely conformed to all the known properties of the molecule. Is there anything inherently unethical or of questionable values in the less conventional approach of Watson and Crick?

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

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 is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above