Afarm worker was moving a bale of hay with a forklift. the edge of the machine hit a tall stack of feed, making the top feed sack fall and hit a co-worker in the head. the co-worker suffered blunt force trauma to his head. what type of hazard is represented in this scenario? a. struck-by hazard b. caught-in or caught-between hazard

Struck by hazard. I mean it's pretty self explanatory, somethings "striking" him in the head.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )