Answer:
B
The second student has not yet seen the same sunrise.
Explanation:
Because as the day goes on, the sunlight shines on places without light as the earth is rotating.
Is caused by vibration, can travel through a vacum, and travels in longitudinal waves<span />
The period during which the presence of stromatolites decline is the Proterzoic period. Stromatolites are widely distributed sedimentary structures consisting of laminated carbonate or silicate rocks, produced over geologic time by the trapping, binding, or the precipitating of sediment by groups of microorganisms, primarily cyanobacteria.
Spermatogonia is my answer
