C, decrease.
If the trait is easy to be seen by predators, they will be caught more often than those without the trait, thus reducing the frequency of the trait.
Explanation:
I'm guessing the answer is oxygen.
About 160 years. After Charles Darwin came out with his theory people have been debating it.
Answer:
Explanation:
We can easily move the box from a ground floor though to the first floor at an angle of 40° to the horizontal by simply pushing the load through an inclined plane. We will simply be lean the inclined plane on the building at the required angle and the push through the the height of the building.
Based on the explanation above, the best type of simple machine to use is an INCLINED PLANE. <em>Note that the essence of using a machine is simply to make our work easier and faster and also be able to overcome a much larger load with a minimal effort. </em>
