1 point A scientist notices that a local population of frogs has started to develop
deformities. He designs an experiment to identify the source of the
deformities, using unhatched frog eggs and a variety of environmental
stimuli. Which of the following would be the dependent variable in this
experiment? *
A. the introduction of pesticides to the frog eggs
B. the number of frog eggs used in the study's sample
C. the development of deformities in the hatched frogs
D. the size of the aquariums in which the frog eggs were kept

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m