<span>
are always unicellular
may have evolved from prokaryotes
</span><span>are more primitive than prokaryotes
</span>
Because it proves the fertilization was impossible
Answer;
Volcanic eruption.
Explanation;
Primary succession is most likely caused by volcanic eruption.
it occurs in lifeless areas; such as regions in which the soil is incapable of sustaining life as a result of factors like lava flows, newly formed sand dunes, or rocks left from a retreating glacier.
The other type of succession is called secondary succession which occurs as a response to disturbance; such as forest fire, tsunami, flood, among others.
Answer:tissue
Explanation:
Tissues are groups of cells that have a similar structure and act together to perform a specific functio”. ... Groups of tissues make up organs in the body such as the brain and heart.
Answer:
The peptide:MHC class II complex can be recognized by antigen-specific armed ... Some microbial antigens can activate B cells directly in the absence of T-cell help. ... 9-1. The humoral immune response is initiated when B cells that bind antigen ... cells presenting these internal peptides can then activate the B cell to make . Explanation:
