Yes because igneous rocks are made from lava that cools in or outside of a volcano and sedimentary rocks are simply made of sand rocks and other things that just stick together in layers and forms a rock. I don't know if I'm being clear though... Sorry I speak French but I hope I helped :)
Explanation: The green algae population will increase because if the crustaceans are killed, there is no consumption of algae hence resulting in increased levels of algae.
After that the blue gill fish that is the consumer of crustaceans will also be affected, their numbers will start to reduce with time and they might die off unless they move to another habitat so the option "D" is wrong
Answer:
<em>The principle of common descent states that all organisms in the world exist because of a common ancestor which gave rise to all the life seen on Earth. The organisms which are more closer to one another might have a common ancestor in the near past as compared to other organisms. The organisms which share distant common ancestors have less common characteristics. This principle has led us to form the basis for the formation of evolutionary biology. </em>