answer: A. individual within the population acquire traits to adapt to the environment
The true descriptions regarding muscles are; Cardiac muscles and skeletal muscles are striated, heart (cardiac) and digestive (smooth) muscles are involuntary muscles, cardiac muscles work to pump blood. Skeletal muscles are the muscles that attach to the bones and their main function i contracting to facilitate movement of our skeletons. Smooth muscle are found in walls of hollow organs such as the stomach and are stimulated by involuntary action. While the cardiac muscles are found solely in the walls of the heart, they are highly specialized and under the control of of the autonomic nervous system.
The skeletal muscles have striations to do their sacromere anatomy
sacromere which are formed by actin and myosin stacking
sarcomere is the functional unit of muscles and shows striated appearance due to thick and thin filaments
hope it helps
Passive transport DOES NOT need energy(ATP), while active transport does.
We would need to see the diagram in order to answer the question correctly. without the diagram we can't help
