When did Pangaea begin to break apart?

a. 20 million years ago

c. 250 million years ago

b. 100 million years ago

d. 2 billion years ago.

Which of the following correctly describes a compound? The atoms are bonded together, and the compound has different physical and chemical properties than the individual elements.

Explain how a Buffer acts to resist pH change in a system upon addition of an acid or a base

Becky leaves home and write a distance of 30 KM it took her 2.5 hours what is her speed

What is C6H12O6+602---> 6CO2+6H20+energy?

I need Chemical reaction experiments that I can do at home and take it home.

Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with He does not

Which mixture can be separated by using the equipment shown below?

El agua de Mar es una mezcla homogenea o disolucion Y El agua corriente Y El aire Y LA lejia Y Los refrescos con gas Y El suero fisiologico Y Las monedas Y LA leche Y LA gelatina Y Los productos de higiene Y El merengue

The component which dissolves in a solution is called the ...

If this fossil is 65 million years old, what could this fossil suggest about organisms alive today? A. If it is similar to any two modern species, it could be a common ancestor of these species. B.