I WILL GIVE BRAINLIST NEED HELP ASAP Goblet cells, which produce mucus, can be found in the respiratory tract. The function of these cells is to produce a sticky fluid that traps bacteria or unwanted particles. These particles are removed from the organism by the movement of the mucus and coughing. In this situation, the respiratory system works in conjunction with the
A
digestive system.

B
circulatory system.

C
skeletal system.

D
immune system.

i would like to prefer some workouts that actually worked out on me at home.

Explanation:

# star jumps- it helps to maintain ur blood circulation in a body.

#Squats- it actually relaxes the every muscle of lower parts of a body.

#push ups- after push ups fires up ur lower parts, u can try exercizing upper parts.

#lunges- after push ups, ur upper body needs to relax. so u can try lunges, to exercise ur lower body.

#plank- Best exercise u can do is plank which exercises ur whole body parts.

#side plank- It is the best exercise if u need abs in ur stomach.

#step ups-keep a bench or stool in front nd try climbing up nd down maintaing ur posture.

#chair dips-u can try this with the same bench that u used for step ups. It helps the strength of ur muscle.

#Wall sit-when ur legs relaxes, u can try this exercise maintaing a correct posture.

#pull ups- At last u can try pull ups which works on ur entire body. Although its tough nd may be difficult at beginning but its result is 100% effective.