Which of the following BEST describes the main advantages a nucleus provides for a cell? A. The nucleus organizes waste transport and protein synthesis for the cell.

B. The nucleus can harness energy from the sun and convert it to a form the cell can use.

C. The nucleus organizes the DNA and allows for careful regulation of gene expression.

D. The nucleus houses the DNA and RNA for the cell.

About which of these did darwin have a poor understanding? a) that much of the variation between individuals in a population is inherited b) the factors that cause individuals in populations to struggle for survival c) the sources of genetic variations among individuals d) that individuals in a population exhibit a good deal of variation e) how a beneficial trait becomes more common in a population over the course of generations