Fetus
Petra is at the fourth month of her pregnancy. Her unborn child is now referred to as a fetus
A fetus is a developing human usually from the ninth week after conception or the eleventh week after the last menstrual period and continues until birth. A fetus is identified by all the major body organs, which are not yet functional, not placed in their final location and not fully developed.
The amino acids are built with different types of protein to help make them up.
This is because your taste and nasal receptors, which are located in the head, are blocked by mucus secreted by your cells. When blocked by mucus, these receptors cannot absorb the smells from foods and thus the taste is different or no as it is usually remembered as.
According to Google, in biology (or science), it means "to cover any funding for scientific research"