Answer:
Parotid glands are the largest salivary gland. Each gland is approximately 6 cm long and 3-4 cm wide and can weigh up to 30 grams. They are located within each of our cheeks. In our oral cavity they are responsible for the secretion of about 20% of saliva. This saliva is known as serous i.e. more liquid and fluid. It helps in the first phase of the digestion of food, facilitate mastication "chewing". These glands secrete protein-rich fluid which is a suspension of alpha-amylase enzyme.
Latitude 12 N, Longitude 45 W is in the North Atlantic Ocean. This is the region where tropical cyclones ( hurricanes ) can start. Hurricanes are large tropical storms with heavy winds. They form only over warm ocean waters near the Equator.
There are 6 main requirements for formation of a hurricane:
- warm sea surface temperature,
- atmospheric instability,
- high humidity in the lower to middle level of the troposphere,
- enough Coriolis force to develop a low pressure center,
- a preexisting low level focus or disturbance,
- low vertical wind sheer.
Answer:
Those are favorable conditions for a hurricane but you also need other factors.
Any change or random error in a DNA sequence is called a mutation.
The geologist time scale was formed when scientists studied rock layers and index fossils worldwide. With this information, they placed Earth's rocks in order by relative age. Later, radioactive dating helped determine the exact age of the divisons in the geologic time scale.
This scale is organized by the 4.6 billion years of earth's history into sections based on important changes seen in the geologic record. The largest intervals are called eons, with each eon containing many millions of years.
In precambarian time the processes that affect Earth's surface have lessened the erosion on the surface. Earth was being hit by meteorites every second. Now there is water erosion and there wasn't back then. The surface changes have lessened over time.
Ethyl methane sulfonate is a chemical mutagen that modifies bases in DNA. This agent causes C to be mutated to T
