C clouds
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals
Answer:
Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.
C. the cell membrane.
the membrane let's things in and out of the cell.
Answer: D. Mitochondrion
Explanation:
The mitochondrion is always the powerhouse of the cell!