I'm kinda confused, I understand what came first in the formation but how do we know which part came first in the formation of our solar system?

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87