Of the possible types of relationships - parasitism is the only one which doesn't really represent a symbiotic type of a relationship. All of the other ones here (mutualism, commensalism and competitive exclusion) are some form of symbiotic relationship.
A mutation can either be passed down as a hereditary trait, but most mutations of the gene can be triggered by something such as radiation from the sun, or if an error is made in cell division as DNA copies itself
From the information above i believe the answer is C. Hope this helped! have a good day
The answer would be "genes".
It all depends on the species, some lose all of their leaves for part of the year while others lose their leaves before the next growing season, retaining some during winter or dry periods.
