Answer:
A control variable in scientific experimentation is an experimental element which is constant and unchanged throughout the course of the investigation.
Explanation:
Dinosaur and bird so u can see how they developed and how they aged to become something popular<span />
<span>The correct answer is option C. i.e.Equilateral triangles. All equilateral triangle have equal sides. Due to this these set of shapes will always be similar. Similarity in the sense that only the size of the triangles can change to large or smaller but the shape will be be similar always.</span>
The answer is inertia becuase it means nothing happening or is doing nothing
