Answer;
A. Movement in his lower extremities
Explanation;
-The 1st lumbar vertebra or the L1 vertebra is the smallest and most superior of the lumbar vertebrae. As the first vertebra in the lumbar region, the L1 vertebra bears the weight of the upper body and acts as a transition between the thoracic and lumbar vertebrae.
-The lumbar vertebrae contain spinal cord tissue and nerves which control communication between the brain and the legs.
A constant in an experiment is <u>B. </u><span><u>the quantity that must remain the same</u>. If it is constant, it doesn't change, so it cannot be variable. D makes no sense.
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Answer:
Oxytocin is the correct answer.
Explanation:
- Oxytocin is a hormone that is released by the pituitary gland and it helps to stimulate the contraction during the labor and it reduces and controls the uterine bleeding.
- Oxytocin is also called a love hormone as it is responsible for human responses associated with bonding and relation.
- Breastfeeding excites the release of the oxytocin from the brain and it provides the baby to get the breast milk from breasts.
Answer:
Scientific investigations produce evidence that helps answer questions and solve problems. If the evidence cannot provide answers or solutions, it may still be useful. It may lead to new questions or problems for investigation. As more knowledge is discovered, science advances.
