What most likely happened in sediment layer 5?
a massive volcano erupted, causing global warming and lava flow, which in turn caused mass extinction.
more iridium was produced by space objects and dumped by local factories.
a massive dust cloud formed, causing global cooling and a lack of sunshine. this in turn caused a lack of plants and a mass extinction.
fewer impacts lead to a drop in iridium levels and a mass extinction caused by a lack of sunshine.

Astudent conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all. 2. based on the experiment in the scenario, which visual aid would be most in showing the change in the plants' heights over time? a. a pie chart b. a line graph c. a timeline d. a bar graph

Select the natural regions. delta denver forest georgia north america plateau stream

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things