Answer:
a. Exothermic.
Explanation:
We know that there are several types of chemical reactions. In some reactions, the energy which is absorbed to break down the bonds of the reactants becomes less than the energy which is released at the time of forming new bonds of the products.
This means that in the whole reaction, energy is released as either light or light. This type of reaction is called an exothermic reaction.
Answer:
Have hard parts
Were generally large
Lived in a narrow range of geographical area
Are extinct
Explanation:
Explanation:
Geologists use the law of superposition to determine the relative ages of sedimentary rock layers.
Answer:
the first and second sentence
Explanation:
Rough and smooth ER is the two kinds
