It would depend.
The weather might be different form mine. I can give you the four main types of clouds there are to help you identify them.
Cirrus clouds are wispy, feather like clouds. They are higher than the other types of clouds.
Stratus clouds are low level clouds that are light gray. They might cause fog.
Cumulus clouds are puffy, white clouds.
Cumulonimbus could are very tall clouds that produce T-Storms. They are a very dark gray.
There are other types of clouds, but these were the four I learned.
Simple squamous epithelium
I think the correct answer from the choices listed above is option A. Directional selection can be distinguished from disruptive selection by the elimination of extreme variations of traits. Directional selection is a natural selection where an extreme phenotype is favored than others.
Answer: Experiment.
Explanation:
Suppose that we have two related variables, A (independent) and B (dependent)
We could design an experiment where we can manipulate the value of A at will, and we also can observe how the variable B changes.
This is called an experiment, where the objective is to see how the variable B is related to the variable A, and then try to make a model that explains this relationship.