Why might two elements possess similar chemical properties?
a. they belong to the same group of the periodic table.
hey have the same physical state.
c. they have similar physical properties.
d. they belong to the same period of the periodic table.

How was the climate when the ambulocetus was alive

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

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences