What is meant by "landscape rejuvenation"? Explain how terraces are developed? i give brainliest​

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?