they conduct a literature review before formulating any hypothesis. carrying out a literature review involves utilizing research databases to look for research materials that cover or are related to a certain topic of interest. the scope of the study and subject matter will influence the selection of research materials. information in these material play a crucial role when scientist are formulating hypothesis.
Those proteins are called apolipoprotien.
Answer:
No tilling agriculture.
Explanation:
No tilling farming is a type of agricultural practice where new crops are grown without spreading the soil through the tillage. This is a very age old practice used by farmers to replant new crops.
The advantages of using thus technique are many. It helps to kill hundreds of insects, it also helps in protecting the soil by leaving crop residue, apart from this is increases the irrigation productivity. Which is why farmers prefer no tilling agriculture mainly because the long term benefits of this technique are many.
Bird migrations began with the recession of the glaciers during the ice age. You will notice a great increase in insects in the spring time and early summer.The birds moved North to take advantage of this increase in the food supply that followed the warming in the spring and early summer. Their reproductive organs temporarily developed so they could lay eggs and raise a family. Look at the early flush of Night crawlers in the moist times of the early rains. By mid summer most of the insects have matured, mated and died. Their eggs have hatched and turned to larva and moved underground until next spring. The shortening of the days causes the reproductive functions to decrease and signals the birds that the food will soon become scarce. They move back to the area that makes it the easiest to find food and avoid freezing. which of course is the warmer climates nearer the equator. Not all birds move past the Tropics at approximately 30 degrees. Some like Chickadees may move down from Mi or Mn or Canada only as far south as Indiana. Some migrations may be quite short. For example from the mountains down to the plains. They don't generally reproduce in the warmer winter climes they migrate to. In the spring time they migrate along paths of the retreating glaciers. As the climate warms away from the tropics the birds follow the emerging insects etc to the birds selected breeding grounds.with increased insects and longer days to feed the hatching's. It is necesary to understand why they move to cooler climates in the summer to under stand why they move to eh warmer ones in the fall. As the days shorten the food supply dwindles and the babies have fledged. They move to warmer climates in winter to rest and refuel for the next years migration.
