<h2>Answer with Explanation </h2>
Hubble space telescope revealed that the new dark spot is a near mirror image of the one found in the Southern Hemisphere. Bright, high-altitude clouds accompany the new northern dark spot. Atmospheric gases that flow up over the spot cool to form the methane-ice crystal clouds. The new spot might be a hole in Neptune's methane cloud tops, giving astronomers a peek at lower levels of the atmosphere.
Mammals first appeared during the Mesozoic era.Hope I helped, good luck!'
The longest river is The Yangtze River in China is the longest river in Asia.<span> It flows for 3,915 miles, or 6,300 kilometers. This length makes it the third-longest river in the world after the Nile and the Amazon.</span>
D) the inner and outer cores
