Photoautotrophs such as plants use energy from sunlight to make organic compounds by photosynthesis. Chemoautotrophs such as certain bacteria use energy from chemicals to make organic compounds by chemosynthesis. Heterotrophs (consumers) obtain energy by consuming other organisms.
Microtubules, microfilaments & intermediate filaments. The cytoskeleton is unique to eukaryotic cells. It is a dynamic three-dimensional structure that fills the cytoplasm. This structure acts as both muscle and skeleton, for movement and stability.
Fossils
Vestigial structures
Homologous structures
Molecular evidence
Comparative embryology
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A mammal is any animal that has hair,three middle ear bones,and mammary glands.Mammals give live birth as well.