<span> purines: adenine, guanine
pyrimidines: thymine, cytosine, uracil </span>
Answer:
They all have a beating heart, and a brain
Explanation:
Adaptations are
the result of evolution in different living organisms. This process occurs amazingly
through gene mutation but it takes a very long period in time. Adaptation
processes occur to help species survive and thrive in the ecological balance of
life. Structural adaptations are physical features of an organism that adapted
through time. An example of this are the bills of a bird and the fur of bears
that they generally need for their survival; birds for hunting, and bears to
protect them from low climate areas.
<span>
Functional or
Behavioral adaptations refer to particular things that an organism or organisms
do to survive. In the example above, behavioral adaptations that birds do is
through certain bird calls and migration, while bears hunt during warmer
seasons and hibernate during winter season. </span>
Lamarck's Theory of Inheritance of Acquired Characteristics was about how organisms could change during their lifetime to adapt to their environments, and how those newly acquired characteristics could be passed down to offspring.
