first left (up) trachea
first left (down) diaphragm
right (up) bronchiole
right (down) alveolus
Answer: The fact that teenagers often feel like adults far earlier than they develop the ability to make sensible, well-thought-out decisions reflects the fact that the limbic system often matures more quickly than the frontal lobe.
The correct option is D (limbic system; frontal)
Explanation:
The Precambrian time refers to the time 4.5 billion to 542 millions year ago. This period is characterized by having reduced atmosphere and included reduced compounds. Scientists believed that atmosphere at that time was devoid of free oxygen and CO2 was present in excess. Before the complex life evolved on the Earth, the Precambrian Earth's ocean contained dissolved carbon dioxide.
You could buy 1 bigger sheep and breed it with a smaller one :D
hope this helps
