Answer:
From fertilization and to the end of the second week.
Explanation:
The development of the fetus is divided into three periods, established by most embryologists: pre-embyonic period, which goes from fertilization to the second week of development, embryonic period, which goes from the third week to the eighth week, and the fetal period, which goes from from the third month until the end of pregnancy.
The pre-embyonic stage begins at fertilization and remains until gastrulation. By the end of the second week the embryo already has the neural tube formed, although it is still open at both ends.
Answer:
a.A b
Explanation:
proportional relationship is formed by the above
Answer:
In the culinary arts, the term "mother sauce" refers to any one of five basic sauces, which are the starting points for making various secondary sauces or "small sauces." They're called mother sauces because each one is like the head of its own unique family.
<span>Environmental I believe is the correct answer.
hope this helps!</span>
