Jacobson’s organs are A.) glands under a snake’s scales that secrete poison for protection.
B.) structures inside the amniotic egg that provide nutrition for the developing embryo.
C.) air-filled sacs that provide extra surface area in the lungs.
D.) chemical-sensing pits in a snake’s mouth that help in finding prey.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

correct answer: false

while planning water activities, it is very important to consider the weather, because if we do not plan and are going for a surf, then it might be that the hurricane came and drown us or may carry us to long distance from where we can not come back. there are many reasons to take information about the weather when we are planning any water activities.

hence, the correct answer would be false.