The presence of a membrane bound nucleus describes the evolution of eukaryotes from prokaryotic organisms. The endosymbiotic theory describes the same, the large cells engulfed the smaller ones, and the engulfed cells were not digested but started living in mutual cooperation with the engulfing cell. Mitochondria and chloroplast are thought to be the engulfed cell
Answer:
I think B but not 100% sure.
Explanation:
I hope this helps!!! :D
Answer:
D is likely to cause both false positives and false negatives
I would say an adaptation is a change that allows you to live in unfamiliar conditions.
Coronary heart disease (CHD) occurs if plaque<span> builds up in the coronary (heart) </span>arteries<span>. ... </span>Smoking<span> is a major </span>risk <span>factor for heart disease. When combined with other </span>risk <span>factors—such as unhealthy blood cholesterol levels, </span>high blood pressure, and overweight or obesity—smoking<span> further raises the </span>risk<span> of heart disease.
Hope this helps you! =)</span>