Gulf Asteroid Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.Since the 1970s, scientists have believed that an asteroid once landed in the Gulf of Mexico and released ash causing a darkening of the sky by 10 to 20 percent over the ensuing decade, which inhibited photosynthesis and leading to the extinction of countless species on Earth. an asteroid once landed in the Gulf of Mexico and released ash causing a darkening of the sky by 10 to 20 percent over the ensuing decade, which inhibited photosynthesis and leading an asteroid once landed in the Gulf of Mexico and that released ash was what caused a darkening of the sky by 10 to 20 percent over the ensuing decade, and it inhibited photosynthesis and led an asteroid once landed in the Gulf of Mexico and released ash causing a darkening of the sky by 10 to 20 percent over the ensuing decade, inhibiting photosynthesis and leading a darkening of the sky by 10 to 20 percent caused by the released ash over the ensuing decade after an asteroid once landed in the Gulf of Mexico, inhibited photosynthesis and it led a darkening of the sky by 10 to 20 percent caused by the released ash over the ensuing decade after an asteroid once landed in the Gulf of Mexico, inhibiting photosynthesis and it led Review Answer