Answer:
A. The respiratory control center senses the need for more oxygen, which causes the trachea to push and pull air more forcefully.
Explanation:
Cyanobacteria were the first life forms on earth, according to fossils dating back 3.7 billion years.
How DNA supports the idea that life change over time is the DNA follow life history and can adopt to thinks very quick
Trigger. She really liked the smell I suppose. Personally not my favorite lol
Answer:
nourish the placenta
Explanation:
The hormone called human placental lactogen (hPL) is a hormone secreted by the placenta, which functions to supply nutrients and oxygen to the growing fetus in the womb.
The human placental lactogen is produced to help in the efficient use of ingested food substances in the production of energy (metabolism). This indirectly helps to nourish the placenta because if the mother efficiently converts food into nutrients, the placenta is also adequately nourished.
