Answer:
I would say We don't have enough evidence or Cell theory is still changing.
Explanation:
There are so many cells in everything so it's almost impossible to know exactly what is going on. Theories about cells have been going on for over 500 years, and we still don't know exactly what is what.
Well my family has a genetic condition but i wouldnt want to know about my chances of catching it. I would rather remain blind to how long and enjoy how long my life lasts. I wouldnt want to know because then I would feel like I have a time limit. By not knowing I can enjoy every breath i take. Also by not knowing I wont have to worry my kids about me. Like last time I had a cold they called a doctor and scheduled an appointment just for a few sneezes and coughs. Also if I told my kids then they would feel like they have a time limit on their lives to. I am just going to live my life to the best. Plus if anything does happen to me I am only like two minutes away from a hospital.
Sunlight is the energy source :)
B) left ventricle → left atrium → pulmonary artery
