Answer:
A. A and B
Explanation:
The reactants in this reaction is A and B;
Reaction:
A + B → C + D
In a chemical reaction, the left hand side is made up of the reactants.
On the right hand side, we have the products
For the example given;
A and B are the reactants
C and D are the products
Physical changes<span> are </span>changes<span> affecting the form of a chemical </span>substance<span>, but not its chemical composition. </span>Physical changes<span> are used to separate mixtures into their component compounds, but </span>can<span> not usually be used to separate compounds into chemical elements or simpler compounds.</span>
The answer is...
<span>B. Animals are always biotic components of an ecosystem.
Explanation...
</span>The living components<span> of the environment are known as </span>biotic factors<span>. </span>Biotic factors<span> include plants, </span>animals<span>, and micro-organisms.</span>
Answer:
For example, the lowest height in a problem is usually defined as zero potential energy, or if an object is in space, the farthest point away from the system is often defined as zero potential energy. Then, the potential energy, with respect to zero at →r0, r → 0 , is just U(→r). U ( r → )
Explanation: