What type of forces causes changes in motion? a. balanced forces b. equal and opposite horizontal forces c. equal and opposite vertical forces d. unbalanced forces

nucleus

would be most reasonable answer tbh

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.