The theory of continental drift by Alfred Wegener states that all land masses were originally united
in a single supercontinent known as Pangaea (250 million years ago). He shows
evidences like continental fit, similarity of rock sequences, glacial till and
striations, fossils (cynogathus-land reptile, lystrosaurus-land reptile,
mesosaraus-freshwater reptile, glossopteris-fern plant) to support his theory but
what was lacking is that it lacked a mechanism to explain HOW the continents
moved apart. But Harry Hess, a geologist and Navy submarine commander during
WWII <span>brought up a new
evidence to add in support of Wegener’s theory: the idea of seafloor spreading and magnetic reversals.</span>
Answer: C. More sediment flowed into the river because the fire destroyed most of the vegetation holding the sediment in place.
Explanation: Pretty much the only logical explanation I think but sorry if I'm wrong.
5 major threats to biodiversity, and how we can help curb them
Climate change. Changes in climate throughout our planet's history have, of course, altered life on Earth in the long run — ecosystems have come and gone and species routinely go extinct. ...
Deforestation and habitat loss. Image: Nelson Luiz Wendel / Getty Images. ...
Overexploitation. ...
Invasive species. ...
Pollution.
Brazil has been providing a large amount of steel to United States and this act is referred to 'dumping'.
