Answer:
The traits that all the solar system models do share is that they have <u>a circular orbit around the sun.</u>
This was Ernest Rutherford’s gold foil experiment. He used radioactive alpha particles as a part of the experiment and discovered that there was a densely packed, positively charged nucleus in atoms with electrons that were spread out in spaces between nuclei.
Active transport requires energy from the cell. It occurs when substances move from areas of lower to higher concentration or when very large molecules are transported. Types of active transport include ion pumps, such as the sodium-potassium pump, and vesicle transport, which includes endocytosis and exocytosis.
Answer:
A
Explanation:
the selectively permeable membrane should be plasma membrane.
and it states it follow concentration gradient
so i think it is <u>A</u>
osmosis is for water
I hope i helped you.