Christy wants to find out if the birds that visit the bird feeders in her backyard would
rather build nests in birdhouses or in trees. She puts a birdhouse next to the feeder
containing sunflower seeds and hangs a feeder containing cracked corn from a tree.
She observes the birds nesting activities over the next two weeks and records her
observations. Which of the following would improve Christy's investigation?
A. setting up a third bird feeder containing fruit near a bird bath
B. setting the feeders up closer to each other
C. putting the same kind of food in both feeders
D. putting more food in both bird feeders

Dying the folding patterns of protein molecules can microbiologists better understand cellular processes as well as some diseases, such as alzheimer’s, that are caused by proteins that have misfolded. the folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. a group of researchers at stanford university developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. as a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. which statement best describes the work of these researchers? the work is not scientific because the data are not processed in one location. the work is not scientific because the simulations are not reproducible. the researchers applied creativity to solve a problem in running an experiment. the researchers used only well-established scientific techniques.

How can you use chemical equations to predict the products of the reaction you can carry out?

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory