Answer:
Nitrogen fuels are burned at high temperatures
Explanation:
When the nitrogen-based fuel is burned at high temperatures, the nitrogen in the fuel combines with oxygen to form nitrogen oxide. While this can occur n combustion engines in cars, leading to pollution, the same occurs naturally espically during lightning strikes that cause the nitrogen gas in the atmosphere combine with oxygen. NO is an airway irritant.
<span>Answer:
It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled non-functioning lungs. Upon closure at birth, it becomes the ligamentum arteriosum. There are two other fetal shunts, the ductus venosus and the foramen ovale.</span>
Answer:
The wing of butterflies compared to that of birds and bats show <u><em>analogy</em></u>.
Explanation:
In the field of biology, analogy can be described as organisms which might have the same function but different biological origin. As we know, all of the flying animals have wings to fly. But all these organisms might not have a common origin. When comparing bats and birds to butterflies, we can see that butterflies have two pair of wings whereas, bats and birds have a single pair. Also, there are many other differences like the wing of a bird has feathers while butterflies do not have feathers.
Extra sugar that a plant doesn't need is stored as starch. Using a tree as an example, it uses photosynthesis to create sugar and the rest that remains unused is stored in the trunk or roots as starch, saved for later.
Astronomy is the scientific study of celestial objects. (Such as stars, planets, comets, and galaxies)
