During which of the following chemical changes does a precipitate form?
a) vinegar is added to baking powder
b) lemon juice is added to milk
c) lemon juice is added to water
d) a banana ripens

Which flexible structure that supports the nerve cord and led to the backbone

The science for classifying and naming organisms is known as

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.