If light is absorbed by a substance, what can be assumed about the frequencies of the light and the material? The frequency of light matches the natural frequency of the molecules in the material.
The frequency of the light is higher than the natural frequency of the molecules in the material.
The frequency of the light is lower than the natural frequency of the molecules in the material.
The frequency of the light is altered by the natural frequency of the molecules in the material.
Finish

What field of science did harry hess study?

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?