Answer:
This method is used for separating bran from flour, sand from gravel, pearls of different sizes, etc. Winnowing:The process of separation of lighter particles from heavier particles; with the help of wind; is called winnowing. This method is also used for separating grains from husk.
Answer:
Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.
Answer:
a population that is adapted to an environment
<span>Some 120 prescription drugs sold worldwide today are derived directly from rainforest plants. And according to the U.S. National Cancer Institute, more than two-thirds of all medicines found to have cancer-fighting properties come from rainforest plants. Examples abound. Ingredients obtained and synthesized from a now-extinct periwinkle plant found only in Madagascar (until deforestation wiped it out) have increased the chances of survival for children with leukemia from 20 percent to 80 percent.</span>
Answer:
Rhinorrhea
Lacrimation
Pupillary constriction
The diagnosis for the patient seems to be a cluster headache. In a cluster headache, the patient will have an intense pain with lacrimation, rhinorrhea, and miosis(pupillary constriction). The pain is unilateral with duration of minutes to hours. It could occur for weeks and <span>disappear </span>for months afterward, makes it called "cluster"..