Purines: adenine and guanine
Answer: Our kidneys filter out excess ions from our blood so that they can be excreted through urine. If the concentration of ions is too high, the kidneys make sure to filter as much of them as they can out of the body. If there are not enough ions, the kidneys will filter them back into the system.
Hope it helps
I think it is the 3rd one because health problems at older age.
The answer is speciation by geographic isolation. When the population of a species gets separated due to reasons such as continental drift, mountains, canyons, etc. then each separated group of population may survive and adapt to their respective environment leading to speciation. These barriers do not allow the evolving populations to interbreed initially and over time when they evolve into different species they become completely reproductively isolated.
So to be a food handler, <u>you require a license. Almost all states require</u> that at least one person in a food truck business or any type of business(where there is unwrapped foods or food preparation) <u>is required to have a food handling permit</u>. It is also referred to as a license, certificate, card, or credentials. You get the point.
