PLZ help me I will give brainest Alexis knows that different forms of water can affect erosion differently. She wants to build a model to compare different forms of water.

How could she build a model to compare how different forms of water cause erosion on a hill?

1. Obtain two identical containers and dry sand.

2. Shape equal amounts of sand into a
(A) slope on the side of each container
(B) flat layer in each container

3. Spray water on the sand in one container. The sprayed water represents
(A) a flowing river
(B) ocean waves
(C) rainfall

4. In the other container,
(A) do not add water. this represents the lack of water erosion
(B) place ice cubes to melt on the sand. this represents snow or glaciers

Analyze differences between the two containers.

The answer should be B, They can all be easily observed.

As all the information says, it is very clear that all his observations can be observed easily, without complicated processes or experiments. Such as the flower color or the seed shape or basically all of the details, all these can be observed directly with eyes in a short time.

On the other hand, we would never know whether the traits are dominant or recessive unless we get more information about the plants' parents or offsprings and/or their genes. Just the observable traits of an individual cannot determine whether their genes controlling for the specific trait is dominant or recessive.

And last but not least, the traits he observed may not be able to be applied to other plants. For example, not all plants are flowering plants and they do not have flowers thus flower color/position cannot be observed.

Therefore, the answer should be B.