Vacuoles are essentially sacs surrounded by a membrane. They are used by cells as temporary storage sites. They often store food, enzymes, and other materials needed by the cell, and some vacuoles store waste products.
The answer is (C) they store genetic info for cellular metabolism
The answer is, "Iron and Nickel".
B ecosystem. They include abiotic factors and biotic factors.
The answer is a the organisms share common ancestors