How do the abiotic conditions of a biome affect the biotic factors in an ecosystem?

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

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun