What day of the year marks the start of the spring season in the Northern Hemisphere when day and night are both about 12 hours each? O A. Summer Solstice
B. Winter Solstice
O C. Vernal Equinox
O D. Autumnal Equinox

What type of specimens where you able to see under each of the microscopes in the microscope activity

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

Which example would the nurse consider to be a part of systems thinking theory?