WRITING/SCIENCE:

Cactus is a plant that thrives in the Desert where there is very little rain and lots of heat. The cactus has spines with thick leafless stems. The spines, and thick stems are structures. What is the function of the spines and thick stems?

(use as much detail as possible) Please help ASAP!! IF YOU HELP, I GIVE YOU BRAINLIEST (if its worthy)

Many functions

Explanation:

They protect the plant from predators(obviously), provide shade, help regulate temperature, reduce water loss and even help the plant to spread and reproduce.

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.

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

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