Answer:
B - Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth
Explanation:
The Miller-Urey experiment was a chemical experiment that attempted to recreate the chemical conditions present on early earth, and used these conditions to try to decipher how life on earth came about.
Their experiment showed that simple organic compounds (i.e. amino acids) that represent the building blocks of complex macromolecules (i.e. proteins) could be formed from this experimental set up with the addition of energy. This showed the minimal features required to form life.
Photosynthesis <span>plants are able to produce their own food using energy.
</span><span>respiration converted from light energy.
</span>aerobic respiration <span>glucose is the energy used to create atp.
</span>hope it helps:)
Answer:
A. Sodium is needed to generate an action potential.
Explanation:
Action potentials are generated by the special types of the voltage-gated channels which are embedded in the plasma membrane of the cell.
These channels are shut when the membrane potential is near zero and the voltage-gated channels open only when the membrane potential is more than the threshold voltage.
When the channels are open then they allow the flow of sodium ions which ultimately changes the electrochemical gradient which rises the membrane potential. This rise in membrane potential generates the action potential.
Answer:
Melting of glaciers and ice caps.
Explanation:
Global warming increases greenhouse gasses increasing heat, obvi. So that will cause the glaciers to melt. and with out glaciers there is no cold water without could water there is no convection current without convection current there are isnoway to move nutrients.