The function of villi, small finger-like projections in the intestines, is to
allow for more surface area in the small intestines. This way, absorbing nutrients from digested food into the blood would improve greatly. Although they do not
help in digestion, they are still important parts of the digestive system.
Answer:
35%
Explanation:
Since we know that 35% of the bases in the section of DNA are adenine, we can conclude that 35% of the bases are thymine.
Amount of rainfall
I’m not sure if this is right but I think it is because all of the rest are major parts of ecosystems, and although rainfall is too, it’s more of a natural source that happens anywhere whereas the rest of the options may determine the ecosystem
No control variable
no hypothesis
only performed once
During early civilization, the main source of fresh water was from a river. Nowadays, we have reservoirs and lakes to get fresh water. <span />
