Answer:Wildebeest are considered keystone species because their presence has myriad effects on the ecosystem, unlike those of any other species. Wildebeest are the "lawnmowers" of the Serengeti grassland. They keep grass short which in turn reduces the frequency of fires.
Answer:
<em><u>intermodal perception 10000% SURE</u></em>
hope i helped
-lvr
thymus plays important role by development of a normal, healthy immune system. thymus function is to generate mature lymphocytes
In other words, white blood cells that help fight of illness in the immune system.
sorry if I am wrong.
<span> LOOK up Negative Regulations E. Coil
</span>
Eukaryotic cells contain membrane-bound organelles, including a nucleus. Eukaryotes can be single-celled or multi-celled, such as you, me, plants, fungi, and insects. Bacteria are an example of prokaryotes. Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle.
