<u>Answer:</u>
<em>Anytime observations need to be clarified. When an unusual condition need to be shown for later reference.</em>
<u>Explanation:</u>
Instead of just recording the data the is sometimes important to be sketched out as the data observed is needed to be clarified and also sometimes there is an unusual condition that occurs and hence, it is important to sketch it so that it can be used for later reference.
<em>Therefore, when we are aware of the situation we need not sketch the data.</em>
Hey You!
I think the answer would be The Rocky Mountains.
The waves crash into the sand, sometimes creating dunes, and it can also wash some sand out into the ocean. Hope this helps!
Answer: Carbon Dioxide
Explanation: Soil aeration is the process that provides the air to the plants and maintains the flow of oxygen and carbon dioxide gases. These are the two most vital gases for the life process of the soil to provide it to the plants and other micro organisms. It provides these gases so that there can be production in the plant through soil.
