Divers instinctively prevent serious damage to arms and legs by pulling them in close to the body during a dive. which two organ systems work together to accomplish this?
a. muscular and digestive systems
b. circulatory and nervous systems
c. nervous and muscular systems
d. digestive and circulatory systems

The two organ systems work together to accomplish this would be the nervous and muscular systems. The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query about and it will be able to help you, and if you’d like, feel free to ask another question.

answer; i believe the correct answer is ( proteins );

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.