Question

plz help me it's very argent plz right answer Dena vrna I report ur answer ​

Answer 1

these are answers;

Explanation:

A. left ventricle

B. during inspiration the diaphragm contracts and pull downwards while the muscle between the ribs contract and pull upwards.

C. Sinoatrial noda and it is also called natural pacemaker

D. insect contain a network on pipe call trachea that run through their body. so the insect gives of its co2 into these tubes all over the body and send the gases through these many openings into the atmosphere.

I hope this is helpful for you