#1) Sand grains can be distinguished from silt grain by ____.
Answer: The answer is size. Sand grains are finer than gravel and coarser than silt. Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. Silt is granular material silt particles are larger than clay but smaller than sand particles, whose mineral origin is quartz and feldspar.
Desert
pavement is created as a result of deflation. Desert
pavement is formed by the process of deflation. Normally, small and fine
fragments are carried by wind since they are light in weight as the larger
compact particles are left behind. What remains is rocky, compact, and not
easily eroded, and it is what is commonly referred to as the desert pavement.
Answer:
Aquaculture has been considered as an option to cope with the world food demand. However, criticisms have arisen around aquaculture, most of them related to the destruction of ecosystems such as mangrove forest to construct aquaculture farms, as well as the environmental impacts of the effluents on the receiving ecosystems. The inherent benefits of aquaculture such as massive food production and economical profits have led the scientific community to seek for diverse strategies to minimize the negative impacts, rather than just prohibiting the activity. Aquaculture is a possible panacea, but at present is also responsible for diverse problems related with the environmental health; however the new strategies proposed during the last decade have proven that it is possible to achieve a sustainable aquaculture, but such strategies should be supported and proclaimed by the different federal environmental agencies from all countries. Additionally there is an urgent need to improve legislation and regulation for aquaculture. Only under such scenario, aquaculture will be a sustainable practice.
Answer:
Since the Sun rises in the east and the Earth moves from west to east, time on the eastern hemisphere is ahead of the Greenwich and that on the western hemisphere is behind it.
They are close to the equator, another reason is because of the tropical maritime location, temperature changes throughout the region are generally small.