Describe how you can use the three rs to conserve recources

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

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

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?