Mammals reached a weight of about 13 pounds within 100,000 years of the extinction event. By 300,000 years after their extinction, they reached a weight of 55 pounds (25 kg), becoming the first purely herbivorous mammalian species. Some mammals weighed more than 110 pounds by 700,000 years after the asteroid.
In the early Paleogene, which was the time after the Cretaceous, it appears from the bones of extinct mammals that they became more terrestrial. According to Professor Janis, the increase in understory vegetation is to blame. "Bushes and shrubs beneath the tree canopy were now a more suitable habitat for these small mammals," she claimed.
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Explanation:
Sediment discharge was historically approximately 270 million cubic meters/year of suspended load and 130 million cubic meters/year of bedload. This has decreased 80% since 1850 and can be divided into three periods: historical period (pre 1900), pre-dam period (1932-1952), and post dam (1963-1982). Suspended sediment loads declined 43% between the historical and pre-dam and 51% from pre-dam to post-dam periods. The size of sediment also decreased drastically including a 72% decrease in the sand fraction. Most of this is due to dams on the tributaries acting as sediment traps primarily for the coarser sediments. Large-scale land clearing for agriculture contributed to increased sediment loads in the historic period.
Answer:
Winter,to conserve heat in the body.
Explanation:
The adaptation of the phospholipd bilayer ensures that the phospholipid tails face one another inwards,while the hydrophilic polar head point outwards.These tails can either by saturated or unsaturated. The high the number unsaturated chains the more the fluidity of the cell membrane,This because the un saturated chain are usually bent -kink-and therefore affects the alignments of the chains make them not properly arranged giving room for fluidity(heat).
In addition the longer the length of these chains the higher the fluidity of the membrane.
Note the more saturated the chains ,the more packed the cell membrane the less fluidity and tendency to freeze up.
In cold environment,as the temperature drops,membrane becomes less fluid, bacteria could not control body temperature,and the membrane fluidity drops.To survive these bacteria responds by increasing the number of unsaturated fatty acids chains(desaturated ) to increase the fluidly to keep warm to avoid been frozen up,thus winter is the beneficial
stir 342 g of sucrose in water to dissolve teh sugar, then add water to bring the total volume of the solution up to .5 liters
<h3>What is
sucrose ?</h3>
Disaccharide sugar sucrose is made up of the subunits of glucose and fructose. It is the primary ingredient of white sugar and is naturally generated by plants. The molecule's formula is present.
Either or sugar beet is used to extract and refine sucrose for human use. Sugar mills, which are frequently found in tropical areas next to sugarcane plantations, crush the cane to produce raw sugar, which is then sent to other industries to be refined into pure sucrose. The beets are processed into refined sugar in sugar beet factories, which are situated in temperate regions where the beet is farmed. Before being dissolved into a sugar syrup that is filtered and then passed over charcoal to remove any remaining color, raw sugar crystals must first be cleaned.
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Speciation is not a mechanism of microevolution.