<u>Answer</u>: B) centrosome - food storage
<u>Explanation</u>: The organelles known as centrosomes have the purpose of organizing microtubules and thus provide the structure of the cell. They also play a vital part during cell division by pulling the chromatids apart.
I think A. But not purposeful, purposelessness is correct answer
Precambrian time, the Paleozoic era, the Mesozoic era, and the Cenozoic era
Limits to variation The most obvious limit to natural selection is that suitable variation may not be available. This may be because certain phenotypes cannot be built, being ruled out either by physical law or by the properties of biological materials.
