Answer: The right side of the brain controls the left side of the body and vice versa So if damage occurs on the right side of the brain that controls the movement of the arm, the left arm may be weak or paralyzed.
Answer:
As stars age, they run out of hydrogen to burn, decreasing the amount of energy they emit. Thus, younger stars can appear bluer while older ones appear more red, and in this way, a star's color can tell us something about that star's age.
Explanation:
Answer:
It is known as a parasitic relationship.
Explanation:
Parasitic relationships are exactly what you described. We see these sorts of relationships in nature in worms for instance.
When a worm attaches to a host, it oftentimes leeches off the host's blood for nutrients and the like. In this manner, the worm benefits while the host gets weaker and loses nutrition.
Other examples include ticks and leeches.
