4. What Happened to the Dinosaurs? There are many theories about why the dinosaurs vanished from the planet.
One theory that many people believe is that a gigantic meteorite smashed
into the Earth. Scientists believe that the meteorite was very big and that
the impact may have produced a large dust cloud that covered the Earth for
many years. The dust cloud may have caused plants to not receive sunlight
and the large plant eaters, or herbivores, may have died off, followed by the
large meat eaters, or carnivores. This theory may or may not be true, but it
is one explanation as to why these giant reptiles no longer inhabit the Earth.
4.

The meteorite caused tectonic plates to move apart, causing volcanoes to erupt. The volcanoes erupting caused large clouds of ash to mix with the dust cloud. This large cloud of dust and ash covered the entire planet and just kept getting thicker due to the volcanoes erupting for days at a time. Once the cloud had dissolved completely, the plants had all died due to the very little amount of sunlight that reached the Earth. Without plants, the animals started to die off too. By the time the plants started to grow back, they were all already dead.

this is me

explanation:

the answer should be b.

explanation:

it should be b because she researched before writing so it would be in past tense. "the author researches her subject before she had written the first draft.