In tree rings, like those shown, each "ring" of growth represents what?
a. two years of growth
b. one season of growth
c. one month of growth
d. one year of growth

Study the image of this rock.which characteristic best supports its formation from sedimentary processes? it has many layers.it is coarse-grained.its grain shape is round.its texture is non-banded.

Classify the structures as homologous or analogous, depending on their structure and function.

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries