Muscle group, muscle, fascicle, muscle fiber, myofibil, myofilament is the proper organization of muscle tissue, largest to smallest.
That would be known as the heart.
Answer:
im not sure what your questions is about it could be
1) mutation, gene flow, genetic drift, and natural selection
or
2)reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.
Explanation:
There are 9 months of pregnancy. Each trimester lasts for 3 months. So C) 4th month would be your answer.