The answer was D..............I DID IT AND GOT IT RIGHT
The wind chill index attempts to tell us what it "feels like" in cold, windy conditions. This index usually indicates the temperature it feels like outside to animals and people. It is also the rate of heat loss when the skin is exposed due to temperature and wind.
Plants' stomata refers to the small pores that are found on plants' tissues and leaves. They possess the ability to open and close and thus they regulate water and gases exchange in plants. Green plants have the ability to produce their own food by using the energy from the sun;the process is called photosynthesis. During the day, when there is sunshine, the plants' stomata are always open in order to trap energy from the sun for photosynthesis. The stomata also allow carbon dioxide and oxygen gases to diffuse in and out of the leaves' cells. The stomata usually closes at night in order to prevent excessive water loss.
Answer:
There is no variation occurs in the offspring produce from male Drosophila.
Explanation: Crossing over is the key to variation in the organisms because parts of two different chromosomes are replaced with each other. This crossing over only exists in the sex cells or meiosis of cell division. In meiosis, the cell is divided into four daughter cells having half number of chromosome. These cells are not identical to each other due to crossing over.