Answer:
Natural selection is an adaptative mechanism that modifies gene frequencies (allele frequencies) in the whole population across generations
Explanation:
According to the evolutionary theory proposed by Darwin, natural selection is the main process that leads to evolution. Natural selection can be defined as a mechanism through which populations adapt and change. The organisms better adapted to their environment will have more chances to survive and reproduce, and therefore they will pass their genes (and favorable traits) to the next generation. This process is able to modify the allele frequencies in the whole population, thereby changing and adapting (i.e., evolving) across generations.
<span>ACL
A popular amongst the most well-known knee injuries is the Anterior Cruciate Ligament (ACL) sprain or tear. The ACL is tissue that associates the thighbone to the shinbone, at the knee. Most ACL wounds are often sport related.</span>
3.hornworts,liverworts and mosses
Answer:
melanin
Explanation:
melanocytes produce melanin - the pigment which is ultimately responsible for your tan. The pinkish melanin travels up through the epidermis and is absorbed by other skin cells.