9. what's the layer of material found at the innermost part of wood? a. heartwood b. vascular cambium c. sapwood d. cork cambium

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.