BIG POINTS How can a single cell become a larger organism 4 to 7 sentences long.

the respective means of growth within an organism varies from organism to organism. For instance, multicellular organisms grow via a process of cellular division known as mitosis, while others (being unicellular) grow or reproduce colonially-speaking via a process called binary fission.

Explanation:

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answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

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