Answer:
These are things that won't be going away. Natural gasses and fossil fuels will likely run out someday or become much harder to find. When you use these sources of energy, they won't be going away and therefore will be sustainable because we can always continue using them.
Does that make sense?
Explanation:
Twelve pairs of ribs are attach to the second spinal region which is called the thoracic. Thoracic spine is kyphotic. Kyphotic means excessive curvature of the spine as it occurs in thoracic and also sacral regions. Thoracic spine is located in the chest area.The ribs are attach to the thoracic spine and protect the vital organs that is located thoracic spine region.
Answer:
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The nuclear envelope disappear
Answer:
Neurons
Explanation:
Neurons are the cells used in the nervous system
When the sperm and the egg comes together they equal to 46 chromosomes. If the sperm and the egg had less or more than 23 chromosomes the baby would be abnormal/deformed
