Select all the correct answers.
what were three weaknesses of non-european regions that allowed european powers to control or colonize them?
they did not have the most advanced military equipment.
they were small nations with small populations.
there was a lack of unity among members of various groups.
they were resigned to the fate of being ruled by foreigners.
they were weakened by trade restrictions and blockades.

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

Nucleic acid certain protein cell membranes certain carbohydrates

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?