A desert plant called Kalanchoe can reproduce, either with sexual reproduction through flowers, or asexually by budding off mini
ature leaf and root clusters from its leaves. When buds are produced, they land on the ground, take root, and grow, genetically identical to the original. If budding is used for several years, a large area may be covered with these descendents from the same original plant. The resulting population of plants will
The resulting population of plants will be identical. This is a type of asexual reproduction in which there is no genetic recombination, this can become a disadvantage in the population for example at the time when a disease appears and the population does not have disease-resistant genes, the population may disappear completely.
however, by this reproduction the plants have the advantage of being able to expand widely in the ecosystem
The relationship between a remora and a shark is an example of commensalism - it's good for one side but neither good nor bad for the other. The remora attaches itself to the shark and gets the benefit of eating the shark's leftovers, but there is no harm or benefit for the shark, and the shark doesn't eat the remora like in a predator/prey relationship.
