Cuales son las caracteristicas y organos q desarrolla el embrion y el feto por trimestre

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

The chemical form of energy that is useable by the cell to do work

Plz ! what does it mean for an allele to be dominant?