An organism's adaptation to the local environment reflects a flexible response to its genome.
a. Darker fur color of the body in certain mammal species.
b. Alterations in timing of flowering due to climate changes
An adaptation is a biological change that better equips an organism to survive within its ecosystem. You mentioned darker fur color in animals in response to warmer climates. The animals with the darker fur color will better blend in with the colors of their ecosystem, which in a warmer climate, would tend to be darker colors, not snowy white ones. So the animals with darker fur would tend to have an advantage in survival over the ones that do not blend in as well. The same goes for flowers and flowering plants. I noticed this last winter season, we did not have much of a winter. We barely had a few days where the temperature got below freezing. In response to this, spring accelerated to summer like temperatures prematurely. The fresh, light green of spring plant foliage was in swing as early as February, resulting in an early cycle for flowers and the insects that pollinate them. Both these examples are adaptations to changes in the organisms ecosystem.