Answer:
The word or phrase that describes slate "Foliated, igneous,metamorphic grains, arranged in parallel layers"
Explanation:
Slates are defined as the fine grained, homogeneous, metamorphic and foliated rock which are being originated from the shales of the sedimentary rock which is typically formed as a result of the clay as well as volcanic ash. The sedimental layers are maintained by the grains present in the rock. Due to the metamorphic compression the foliation occurs. slates are formed under the low grade metamorphic condition which like low temperature and pressure. Best grade slates are found in the Brazil and United kingdoms. It is found in the cliffs, underground pits etc.
Answer:
<u>Fertilizer usage is linked to the agricultural practice</u> with an aim to <u>enhance the crop yield</u>. Inadequae use of fertilizers however causes soil degradation because <u>these practices overlook the spatial differences in soil fertility status </u>in agricultrual systems. Specifically,<u> not all soils require fertilizer application at the same levels</u>. A recommended approach is that, initially, there should be a proper study of limited nutrients in the soil and thereon only those nutrients should be given at controlled concentrations, which are limited. A major reason is that <u>high concentration of specific nutrients would affect the bioavailability of other nutrients</u> in the long run and could also lead to soil degradation (by affecting soil health status). <u>The microbial population in the soil could also change</u> that are typical for essential biogeochemical cycles. This is a very critical aspect in future future agriculture and to preserve the environment. <u>Deforestation</u> is a condition when the plants are cut excessively for agricultural purposes. <u>If soil degradation continues as discussed above, it would put a reduce the overall proportion of agricultrual land and cutting of naturally grown forests would be required. This would turn the green zones into agricultural zones (in future)</u>. This is a pressure on ecosystem and the consequences can be really harsh.
<span>I think B but not 100% sure</span>
It is important that a population of predators exist in an area so that the population of primary consumer can be controlled or else that population of the herbivores will increase and become too large to sustain.
Answer:
Letter b
Explanation:
The diseases that are common to wild species are becoming more prone to be human diseases since the 1970s. Virus are specially important agents of sources of disease because their nature allows them to spread and adapt to different hosts easily compared to other organisms. After the 1970s the urbanization rate around the world has accelerated and thus most part of the world population it is now allocated on those dense populated areas. Those areas tend to be easy targets for a spreading infectious disease that culminate in global threats.