1. Some bacteria in the colon help in making vitamin K. What is the function of vitamin K?

A. helps fight infections

B. important for heart health

C. essential in helping blood to clot after an injury

D. Important for bone growth

Brainiest if right

D. Important for bone growth

Explanation:

Bacteria that live in the human gut also produce small quantities of K-2. Both forms of vitamin K are essential for blood clotting and bone health.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.