Please help me

Matthias Schleidan observed plant leaves under a microscope. How did this help contribute to cell theory?
A- It helped to show that all plants are made of cells.
B-It helped to show that all plants are made of chloroplast.
C-It helped to show that plant cells can be created from soil.
D- It helped to show that plants cells cannot function independently.

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.