Which statements can be inferred from the Paleozoic era time scale? There was volcanic activity during the Paleozoic era. Dinosaurs existed in the middle part of the Paleozoic era. Marine organisms existed in the early part of the Paleozoic era. Ammonites existed before the trilobites did during the Paleozoic era. Erosion and deposition were processes that occurred during the Paleozoic era.

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

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.

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers