The correct option is A.
Succession refers to the process by which the structure of a particular biological community evolves over a period of time. There are primary and secondary succession. Primary succession usually occur in an area in which the soil is not capable of sustaining the growth of plants. The options B, C and D given in the questions are examples of primary succession.
Answer:
The term matter refers to anything that occupies space and has mass—in other words, the “stuff” that the universe is made of. All matter is made up of substances called elements, which have specific chemical and physical properties and cannot be broken down into other substances through ordinary chemical reactions.
Explanation:
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<span>The cells that most directly attack and lyse cells infected by the virus are T cells. These cells mature in the thymus. T cells are an essential part of a properly functioning immune system. Patients with reduced T cells may end up being in more danger from the flu than those with a healthy immune system.</span>
Well it's covered in red.
