You find a 10,000,000 year old rock 2,500 km away from the
nearest seafloor spreading center. The plate has been moving since its
formation by (2,500 km)(100,000 cm/1 km)/(10,000,000 yr).so the plat has been
moving equal to 25 cm per year since its formation.
Answer:
all cells originated from pre existing cells
A) Biological, physical, and chemical.
b) Physical: sediment radioactive material and heat.
c) Chemical: organic/inorganic: heavy metals, nutrients & pesticides.
