Option B, "They need more oxygen to function, so gas exchange needs to increase. "
Answer:
that there is an aura around the entire central mass
Explanation:
Answer:
Vacuoles are storage sacs used for storing liquid and solid contents.they are small in animal cells and large in plant cells.in plant cells vacuoles are full of cell sap and provide turgidity and rigidity to the cell.in single celled organisms like amoeba,the food vacuole contain the food item that amoeba has consumed.in some unicellular organisms specialised vacuoles also play important role in expelling excess water and some waste from the cell.
Explanation:
Answer:
francium
Explanation:
The most expensive natural element is francium, but it decays so quickly it can't be collected to be sold.
