A historical method that shows sediment deposited on a yearly cycle, such as a glacial lake. the anwser options are varve or tree rings

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000