Answer:
Populations have variation in traits due to random mutation, crossing over and environmental conditions.
The two diagrams below represent a sugar molecule and a fat molecule 1 point that is used by living organisms. Which statement best describes these two molecules?
When a specimen is to be observed under the light microscope, scientists usually stain the specimens using different type of chemical stains depending on the type of specimen to be observed. Staining of specimen make the structures that are to be observed in the specimen very visible under the microscope, this make it easy for scientists to observe their structures.
They need to divide so they replace old or damaged cells
