Evolution allows us to explain:
A) only the diversity of life.
B) both the diversity of life and how all living things are related.
C) only the unity of life.
D) only the origin of life.
Answer: B
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Sexual dimorphism means that ____________________
a. males are always larger than females b. females are always larger than males c. there is a size difference between males and females d. males tend to be more “showy” than females
Which component becomes oxidized in the following chemical reaction?
4 Fe + 3 O2 ? 2 Fe2O3 a. water b. iron c. oxygen d. rust e. hydrogen
You buy a new house and the front yard has some really nice rose bushes, but they are surrounded by lots of weeds! You don't really want to try and dig them out by hand and your nice new neighbor comes over with a bottle of weed killer. He says it shouldn't kill your roses, but you, knowing that weeds and rose are pretty similar physiologically decide to do some research. You find out the active ingredient in the weed killer causes the stomata close when in contact with the chemical.
What would be the results of the chemical being sprayed on your roses? Explain which parts of photosynthesis would be affected, what those effects would be, and how would the plant be affected? Would it be likely to hurt your roses?
Select the example that is most likely to be a site where a restriction enzyme would cut DNA.A. 
B. 
C. 
D. 
A. option A B. option B C. option C D. option D