Answer: white blood cells
Explanation: They fight off the bad bacteria.
When the sea floor spreads or collides it creates breakages which would be ocean ridges and deep sea trenches
Generally, the graph line will begin as a straight line when the substrate concentration is low. At very low substrate concentrations, the rate is proportional to the substrate concentration. As substrate concentration increases, it affects the enzymatic reaction, so the rate will change and the line will change.
The answer is invasive species.
Invasive species are species that are not native to specific ecosystem,
but they have a capability to spread widely through the ecosystem, This way
they can threaten native species of the ecosystem or cause
environmental harm.
<span>After being introduced into the Black Sea, they greatly affect local
ecosystem. In the new area, they have no natural predators and are able to
spread. If they spread beyond the area they are introduced, they
become invasive species which can overgrow native biotopes and are
a great threat to the local biodiversity. This could lead to the extinction
of some native species.</span>
