Answer:
<em>skin cells </em>
<em>Explanation:</em>
<em>skin cells about 30</em>
<em>coil bacteria 2 micrometers</em>
A is correct (ur welcome)
Air because of the density
<span>Moving to the sun. Even trees that grow to the sunlight, phototropism, take advantage of movement. Without it, any time your "Home" becomes dark, you die.</span>
Allan already had a heart attack and can try to prevent another one by changing the diet, exercising, or even quit smoking, but there are non-modifiable risks such as age, sex and generic heritage, so If Allan is over 40 years old, male or comes from a family with heart diseases, Allan needs to be extra careful because those factors cannot be changed no matter how the way of life is changed.