Water potential calculations -4.5 bars answers

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?

What characteristic make legumes a good food source for food insecure populations

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above