Which of the following describe stems? Select all that apply. Sugars are made in the stems.
Herbaceous stems are woody.
The stems connect the roots to the leaves and flowers.
The xylem and phloem go through the stems to transport water and food.

Lol

Explanation:

Pepe

"a.) well–developed vascular system."

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.