Is the distance that light travels in one year
Answer:
In the chart below is the rest of the fundamental quantites.
Explanation:
Answer:
the negative effects are sometimes referred to as "brain drain". The notion of the brain drain is largely unsupported in the academic literature. According to economist Michael Clemens, it has not been shown that restrictions on high-skill emigration reduce shortages in the countries of origin.
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Answer:
The three sand are similar in composition, since all are formed 90% by quartz. They are also similar in roundness, as they all have large particles that allow a very sandy soil with low water retention.
Explanation:
The desert area of the river and the beach have a very similar composition, since 90% of these sands are composed of quartz. however, the similarity does not mean that these sands are the same, as they are not, since the sands of the beach and the river may have a little more material, such as animal remains, making these sands also have carbon in composition, something that desert sand has in less quantity.
In addition, both sands have large particles that promote strong aeration in the soil, but a very rapid loss of organic matter.
Answer:
True, several ecosystems have been damaged thus conserationalist focus on protecting several species.
Explanation:
- As the ecosystem is not only a part of land found on the earth it involves the entire system of the mountain to oceans to the atmosphere to the food web and even the humans. Thus ecologists and biologists are aware of the fact that man for his selfish needs has destroyed the natural carrying capacity of the ecosystem beyond repair.
- Thus conservationists focus on protecting the entire chain of species as all are linked to the same biotic community and hence live in harmony and coexistence of each other.
- By keeping these species protected the balance of energy flow in the ecosystem will remain stable and population of these species will continue to grow thus they focus on the making biological areas for their protection, reserved forest and protected forest areas are solely created so that the species get their chances to survive.
Source guardian paper.