DNA gyrase is an essential bacterial enzyme that catalyzes the ATP-dependent negative super-coiling of double-stranded closed-circular DNA. Gyrase belongs to a class of enzymes known as topoisomerases that are involved in the control of topological transitions of DNA. Hope this helps! :3
Lead emission since early 1980s have DECREASE DUE TO LEAD FREE GASOLINE.
Lead is a natural occurring element that is found in small quantity in rocks and soils. Lead emission is an important environmental health issue because a very small quantity of lead can cause adverse effects on the nervous system of unborn babies and young children. Because of this, the government took all necessary measures to ensure that its emission was drastically reduced.
Explanation:
Aristotle's model shows the planets in the celestial realm moving around the Earth in an orderly manner, in perfect circles and with uniform motion-neither speeding up nor slowing down.
Answer:
Earth is the third planet from the Sun at a distance of about 93 million miles (150 million km).