Answer:
The answer, I believe, is <u><em>a.</em></u>
Explanation:
Observations of fossils came later I believe. :)
Mitosis and meiosis are similar in that they are both forms of cellular reproduction, and they both, consequently, produce daughter cells. Both processes also use the same four steps: prophase, metaphase, anaphase and telophase.
Adaptation is evolutionary process that fits organisms to their environment, increasing their evolutionary fitness. It is in a first place, a process rather then a part of a body or a physical form.
Adaptation is one of two main processes that explain the observed diversity of species. Other process is speciation.
All adaptations help organisms survive in their environments.
The adaptive traits may be physiological, behavioural or structural.
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). Groundwater can be extracted using a water well.