I think the mean DNA but don't quote me on that.
Answer: choice A
Explanation: hope this helps
SORRY IF IM WRONG
Answer:Toothed whales do not make the long, low-frequency sounds known as the whale song. Instead they produce rapid bursts of high-frequency clicks and whistles. Single clicks are generally used for echolocation whereas collections of clicks and whistles are used for communication.
In earth science, erosion<span> is the action of surface processes (such as water flow or wind) that remove soil, rock, or dissolved material from one location on the Earth's crust, then transport it away to another location. so the area would experience the most erosion is the area with </span><span>a severe thunderstorm & a dry area with little vegetation because thunderstorm will give so much rain flow and wind since there are little vegetaion, no one will hold the soil together and lessen the impact of water flow</span>