Answer;
Genetic drift
The mechanism of evolution that would have caused this change is genetic drift.
Explanation;
Genetic drift refers to changes in allele frequencies due to random chance. Genetic drift will eventually lead to allele loss or fixation even in large populations, but will take many more generations to occur in large populations than small. It may rapidly alter allele frequencies when population size decreases; bottle neck effect and founder effect.
Smooth muscle, a type of tissue that allows for constriction or dilation, makes up the blood vessel walls. The absence of striations (stripes), which are present in both skeletal and cardiac muscles, gives smooth muscle its name.
Only smooth muscle cells are found in blood arteries. The tunica media houses these muscle cells, elastic fibres, and connective tissue. Even though vessels only have smooth muscles, skeletal muscle contractions are crucial for the venous system's ability to transport blood from the periphery to the heart.
The autonomic nervous system regulates the smooth muscle found in the walls of hollow internal organs like blood vessels, the gastrointestinal tract, the bladder, and the uterus. Since smooth muscle cannot be consciously controlled, it behaves spontaneously.
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Answer: a eukaryotic cell that can make its own food
Explanation:
Weathering and erosion .. as weathering occurs breaking up the rock it can be transported through erosion .there are two categories of weathering processes: physical and chemical . although they are two very different processes that work together to break down rocks and minerals.
old stone age could be the answer you’re looking for :))