Daniel is researching the migration patterns of blue whales. which of the following will daniel use to find the most reliable information on his topic?
a. an online journal
b. an acclaimed movie
c. a letter to the editor
d. a scientific article

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the