Answer:
Metals that have iron are magnetic.
Going of by the number of angles (aka the blue dots) I‘m 99% sure the answer would be B. We start off with four angles and it decreases by one with each figure. We have 4,3,2... which leads me to believe that B, with 1 dot, would be the correct answer.
B. hydrosphere
Why? The hydrosphere contains all the waters on the earth's surface, including atmospheric moisture, such as clouds.
You're welcome. :)
The control group in this experiment is the group of tomatoes that do not receive any fertilizers i.e. fourth tomato plants.
<h3>What is Fertilizer?</h3>
Fertilizer may be defined as any chemical or natural substance which is added to the soil with the intention of enhancing productivity.
All those groups of tomatoes in which fertilizers are added behave as a reference group while those in which fertilizer is not added behave as a control group.
Therefore, it is well described above.
To learn more about Fertilizers, refer to the link:
brainly.com/question/24544067
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