Was it beneficial or harmful for the Chthamalus barnacle to add the Balanus barnacle? Explain.

Common commercial benefits of microorganisms include synthesis ofa. insulin. b. antibiotics. c. aspirin. d. antibiotics and aspirin. e. antibiotics and insulin.

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Look at the photo of the leaf. which term best describes this leaf?