D: Heavy rain, cooler weather and clear days
Nerve cells carry information to the brain. Muscle cells make up your muscles. Red blood cells carry nutrientsand air throughout the body.
The environment could effect variations of a species, species adapt differently in various ways
They would test two subject/mice which is S-Strain and R-Strain to see the differences and scientific behavior. In the end one died which is S-Strain and the other lived which he later affirm the transforming principle by testing with the chemical itself. In turn out comes the Answer
Explanation:
photosynthesis eats carbon dioide cellaur doesnt