Answer:
Comunidad de flora y fauna que ocupa un hábitat importante.
Explicación:
El bioma se define como una gran comunidad natural de flora y fauna que ocupa un hábitat importante como el bosque o la tundra, etc. Las plantas y los animales que viven en un bioma tienen características y adaptaciones comunes para el medio ambiente. Hay siete biomas presentes en la tierra, es decir, tundra, matorrales, bosques lluviosos, pastizales, desiertos, bosques caducifolios templados y bosques de coníferas. Hay cinco tipos principales de biomas: acuático, pastizal, bosque, desierto y tundra. Las plantas y los animales presentes en cada bioma se adaptan a ese bioma.
The answer that makes the most since is A!
Here were the choices on that question:
a. poverty
b. lack of adequate rivers
c. mountains
<span>d. richness
The answer is D. richness. Based on A Companion to World History, the African Sahel can be a corridor of communication between Nile and Niger valleys but did not materialize. The reason was the richness of Sahel that it that it can provide for itself even without trade.
</span>
Answer:
This is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems:
1. Phosphorus is highly stable in the atmosphere and remains there for long periods of time.
Explanation:
The phosphorus first cycle is the process by which the phosphate ion passes in very small amounts through the lithosphere from volcanic aeorosols, then to the hydrosphere, where it stays from 20,000 to 100,000 years in the ocean, and finally to biospherere, where rain and erosion helps washing the phosphorus from the rocks into the soil. So, raining is the beginning of the phosphorus´s second cycle, so it is also, the slowest one of the matter cycles that is why the natural total background phosphate levels in several bodies of freshwater range from 0.005 to 0.05 mg/L. Phosphorus remains mostly on land and in rock and soil minerals.
Although abundant on our planet´s sedimentary rock crust and in human body, phosphorus to commercialize is only found in minerals therefore, phosphates mining activity and calcium heating is the only way to get it in its pure elemental form. It is an essential nutrient for plants and animals and a big percentage of the mined phosphorus is used to make fertilizers.
