D. A cross betwe pink mellia
plants produced the following
offspring: 7 plants with red flowers
.
7 with white flowers, and 14 with
pink flowers. What is the ratio of
red to white to pink?

1:1:2

Explanation:

From the question, we are informed that a cross between pink mellia plants produced the following offspring: 7 plants with red flowers, 7 with white flowers, and 14 with pink flowers.

The ratio of red to white to pink will be:

= 7:7:14

Note that 7 is a common factor in the above ratio, therefore we'll reduce it to the lowest term which will be:

= 1:1:2

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.