You listed a fifth answer, but didn't actually provide it, just so you know, but no matter, the answer you're looking for is D. Composed of carbon atoms, arranged as tetrahedrons, held together with strong covalent bonds.
Answer:lol
Explanation:adios master te me cuidas crack
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Metaphase
The second stage of mitosis. In this stage the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere.
Answer: Active transport
Explanation: requires the cell to spend energy, usually in the form of ATP. Examples include the transport of large molecules (non-lipid soluble) and the sodium-potassium pump. Types of active transport.
<span>The footprints of a dinosaur are an example of what type of fossil?
D. Trace Fossil
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