It means <span>a substance formed by chemical union of 2 or more elements or ingredients in definite proportion by weight.</span>
The answer would be B - homogeneous mixture
Answer:
One is tension force that acts on the string and the other one is gravitational force that is acting on the pen and is therefore, the one that pulls the pen towards the ground. Therefore, the pen's motion is caused by the unbalanced force acting on the pen.
Answer:
species like plants, animals , human etc