Answer:
D. No, because the first atmosphere contained very little oxygen.
Explanation:
Answer:
1st law of thermodynamics- energy can not be created or destroyed
2nd law of thermodynamics- energy becomes less useable
-only ten percent of energy in the producer level can be transferred to the next level and so onto the next level
- the lost energy either becomes heat or waste
Negative feedback works to move the variable in the opposite direction.
The answer is lumbosacral enlargement. It is the enlarge region of the spinal cord into the branches within the vertebral column. It also extends beyond conus medullaris and would innervate the lower limb.Hope this is the answer and would be of help.