3. The island of Rum in Scotland had wolves and trees 500 years ago. It now has neither. a. Offer one hypothesis for the current condition based on the concepts of keystone species and trophic cascades b. Suggest one way to test the hypothesis.

Are salt and soap nutrients or toxins for yeast? explain.

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity