Answer: Adaptation
Explanation:
The adaptation can be defined as the biological mechanism that makes the organisms suitable to survive in the changing environment. The adaptation can be done at the genetic, molecular, physiological and structural level all these adaptations increases the likelihood of survival of the organisms and increases their rate of reproduction. The beneficial traits acquired due to adaptation are passed from parents to their offspring. Thus the adaptation becomes profound and observable in living beings.
Answer:
abiotic and biotic
Explanation:
the abiotic components of any ecosystem are properties os the environment
Answer: b. Muscles
A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.
Hence, locomotion in metazoa is due to contraction of muscles.
Insertion
Genetic stability maintenance requires an extremely accurate mechanism for DNA replication and mechanisms for fixing the several accidental lesions that occur continually in DNA. Spontaneous changes in DNA are temporary due to immediate correction process called DNA repair. DNA repair’s importance is very evident from the huge investment that cells form in DNA repair enzymes. In 1000 accidental base changes in DNA , fewer than one results in a permanent mutation due to the efficient elimination by the DNA repair.<span> </span>
