Answer: by colors
Explanation:
A lot of Fish have certain colors to help blend in to their environment.
I hope this was helpful. :)
Eutrophication is the enrichment of an ecosystem with chemical nutrients, typically compounds containing nitrogen, phosphorus, or both.
Eutrophication can be a natural process in lakes, occurring as they age through geological time.
Eutrophication was recognized as a pollution problem in European and North American lakes and reservoirs in the mid-20th century.
Human activities can accelerate the rate at which nutrients enter ecosystems.
Answer:
B. When Alfred Wegener propose the idea of continental drift
Explanation:
The first true explanation came from Alfred Wegener, who proposed the Plate Tectonic Theory. This theory stated, in a nutshell, that the continents different pieces that collided together at faults.
Technically, explorers found out this way back. If you consider this the answer choice, then C is your best answer.
<span>The significant figures include the mountainous ocean ridges, deep-sea trenches, and jagged, linear fracture zones. Other significant features of the ocean floor include aseismic ridges, abyssal hills, and seamounts and guyots. The basins also contain a variable amount of sedimentary fill that is thinnest on the ocean ridges and usually thickest near the continental margins.</span>
