If testa is removed from a water soaked gram seed the remaining structure is

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Which of these parts of the membrane large moecules pass through it ?