How does the burning of fossil fuels and deforestation contribute to the overall amount of carbon dioxide?

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

What is the correct trna sequence that would match the following mrna sequence.gcgaua

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis