<u>The correct answer is</u><u> primary succession after a volcanic eruption</u><u> </u>
<h2>Explanation:</h2>
Primary succession occurs when a massive disaster takes away the soil. This is common after a volcanic eruption. Starting from bare rock, lichens and mosses are the major producers. Primary succession occurs in essentially lifeless areas so as shown in the figures we can see that there is nor life there and only lava is present so we can say that it is primary succession.
The Answer is B i just took the test. Enjoy, i also just looked it up on a quizlet. That's another website you can use if it comes up in the search for the question.
sickle cell anemia is caused by a mutation in the hemoglobin beta (or HBB) gene and it leads to a single change in amino acid sequence. this gene is located on chromosome 19
