<span>A.
to fuel their chemical reactions</span>
Answer:
The correct answer is - natural selection.
Explanation:
Natural selection is a process of adapting according to the environmental change in order to survive and reproduce and increase their number. It is represented by Darwin for the first time. Natural selection leads to evolution.
In this case, White moths adapt according to the environment by increasing the population of black moths in order to blend with the surrounding and as the result, black moths are more likely to produce and survive and passed this trait to the next generation.
The answer is B- The P wave travels through the earth’s crust more quickly than the S wave travels.
This is because the P wave reaches the same point that the S wave does faster. According to the graph, the P wave reaches 10,000 km in about 5-10 minutes, while the S wave takes about 25 minutes to reach the same distance.
A river flowing<span> across a wide flood plain begins to </span>form<span> loop like bends </span>called<span>. meanders.</span>
I believe you're looking for "chemical digestion".
Chemical digestions is where food that we ate is digested into simpler and soluble molecules that can be absorbed by our body. Enzymes are used as a catalyst to speed up the reaction.
One example is the digestion of lipids. Enzyme named lipase is used to speed up the digestion of lipids into 3 fatty acid molecules and 1 glycerol. This way, our body can absorb these simple molecules, and use them in order to make our body function.
On the other hand, physical digestion does not include enzymes, such as chewing in our mouth, therefore, don't mix them up!
