Part A

What are the student’s observations and inferences before he starts his investigation?

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?

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the