<span>We can use rocks to determine if the animals from to day have changed from the past.
Rocks also help us know if rivers once flowed through an area.
We use them to find out what type of animals live then that are extinct now.</span>
Answer:
upper left
Explanation:
it is a trend on the periodic table. Ionization energy increases from left to right(->) I t also increases down to up
A whiteout occurs when strong updrafts and downdrafts combine
Answer: 1.Sulfuric acid is a catalyst
2. Vanadium(v) oxide is a catalyst
