Answer:
They change their color so they wouln't be spotted by predators. Its like a self defence meckanisum ( i dont knwo how to spell) so they wouldn't get caught.
Explanation:
hope this helped
Answer:
B. The equator is susceptible to extreme storms so the thermocline changes significantly throughout the year.
Explanation:
Storms occurs on that locations where there is high temperature and high temperature is only present at the equator due to direct sunlight. So we can say that maximum storms comes at and near the regions of equator. The oceans present near the equator have a warm layer known as thermocline from where water is evaporated and the intensity of storms are also increases.
Answer:
Crestas mitocondriales, poros de la membrana nuclear y las capas lipídicas que forman la membrana plasmática no son visibles al microscopio óptico.
Explanation:
El límite de resolución de un microscopio óptico es de, aproximadamente, de 0,2 μm (es decir 10⁻⁶ m). Es decir, que en un microscopio óptico sólo podrán verse células y estructuras celulares mayores a 0,2 μm, y en algunos casos serán visibles sólo con tinciones especiales.
Por ende, entre las cuatro estructuras que se nos presentan en el problema sólo los cromosomas de una celula animal condensados durante la mitosis pueden verse al microscopio óptico.
<u>Tanto las crestas mitocondriales como los poros de la membrana nuclear y las capas lipídicas que forman la membrana son estructuras muy pequeñas y visibles solamente al microscopio electrónico</u>.
One activity would be logging of trees, which could be selective or clear cut. It is done to provide wood for building houses and for pulp for paper primarily. A short term effect would be loss of habitat for forest wildlife and removal of vegetation and it could result in increased erosion if in a mountainous area. Loss of old growth forest possible too. Long term effect if re-forested could be partial restoration of habitat. Another activity is open pit mining whereby the land where the orebody is is cleared and mining creates sometimes large holes in the ground and removes old lake habitats for migratory birds and fish in the short term.The purpose of the mining is partly to provide metals to society. The long term, if adequate reclamation of waste dumps is undertaken, can lead to extensive new grasslands on the dumps and forage for deer and moose and sometimes cattle. Oil production and transport on oceans can lead to oil spills such as occurred off Valdez in the 1980's or in the Gulf of Mexico recently and the short term is soaking marine animals with oil and killing many of them and contaminating beaches and shorelines. Some clean-up can be done but the long term effects of this activity may still be unknown. The oil is for fossil fuel for internal combustion engines but it will need to be replaced by say, electric cars for the future ie to clean energy. Another general effect of this time, the use of fossil fuels is from global warming is creating more and more intense hurricanes such as occurred in the Caribbean this fall in Cuba, Florida, Dominca and Puerto Rico in particular with the result of widespread damage or destruction of people's houses, flooding, loss of power and costly repairs and loss of life. Only by limiting the production of greehouse gases by mankind will there be a chance to reduce the incidence and intensity of such events.