Which conclusion is best supported by the information?

When analyzing tree rings, what do scientists assume a thin ring indicates?

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

Nucleic acid certain protein cell membranes certain carbohydrates