What are the structures that are rod shaped and are known as the powerhouses of the cell?

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give