<span>Clay, sand, and silt</span>
<span>Other factors found within its environment can make pioneer species still germinate and thrive. Factors like wind, presence of animals, rain, among others, can help in the germination of the pioneer species even if its immediate environment becomes inhospitable through time.</span>
Answer:
A physical change effects a substance physically. Examples include cutting, bending, dissolving, freezing, boiling, and melting.
A chemical change effects a substance chemically. Examples include burning, rusting, and digesting.
Hope this helps.
OK the the answer you are looking for will be the excretory system because that is the system that releases waste.
This depends on the point of view, I believe. Chelicerate is not the direct ancestor of trilobites, but it is related but distantly.