Answer:
Sexual reproduction.
Explanation:
Like most mammals, giraffes produce sexually, meaning that both parents contribute to the DNA of the offspring.
A concentration.
In cells, there are two types of transportation of needed organic compounds. The active and passive transport.
The active transport requires energy or ATP while passive doesn't. Further, diffusion, a passive transport transfers compounds from higher to lower concentrations.
If I remember correctly, it's the Independent variable, since the amount of sunlight (determined by where the plant was placed) controls how much it grows, but I'm not 100% sure. I know for certain that it's not 2 or 3.
Cheese, yogurt, buttermilk, sour cream, and pickles are lactic acid fermenters. Yogurt and cheese both start with a source of sugar (i.e., lactose from milk).
Hope this helped