A. Mass extinction is the answer
The principle of defense-in-depth<span> is that layered security mechanisms increase security of the </span>system<span> as a whole. </span>
Heterogeneous, because you can take out or sort the ingredients in all three into separate parts
With out genes we wouldn't look, talk, or have our own option's
Humans get D vitamin from sunlight. the plants perform photosynthesis and grow , we eat those fruits and vegetables grown in the plants. so indirectly we humans and other animals are benifitted from sun sunlight . flesh eating animals eat herbivores animala so they are also benifitted
