The answer is D) unlimited flow of water into or out of the cell for #9.
For #10, the answer is C) endocytosis and exocytosis.
Your answer would be D :)
Answer: it can change because...
Explanation: the tilt of the earths axis is a little over 25 degreas so when the earth is tilted twards the sun the day is longe and vise versa because of this the seasons are created
Since the wheelbarrow is filled with soil, that adds more weight to it. Which means you would need to use more strength/force.
When the wheelbarrow is empty, it has less weight so you would use less force.
Answer:
I think it's choice 5. because all living things are made up of cells.