Some scientists study the way fossils and living organisms are distributed, or spread out, on the Earth. What is this area of study called

What is the 77 element on the periodtic table

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt