<span>To a first approximation, the Earth's magnetic field resembles that of an enormous bar magnet. The field lines emerge from the southern half of the earth and re-enter in the northern half.
Several features of the Earth's field vary in a predictable way across the surface of the globe and might, in principle, be used in assessing geographic position. For example, at each location on the Earth, the field lines intersect the Earth's surface at a specific angle of inclination. On the diagram above, note that near the equator, the field lines are approximately parallel to the Earth's surface; the inclination angle in this region is said to be 0°. As one travels north from the equator, however, the field lines become progressively steeper. At the magnetic pole, the field lines are directed almost straight down into the Earth and the inclination is said to be 90°. Thus, inclination angle varies with latitude. As a consequence, an animal that has the ability to distinguish between magnetic inclination angles has a mechanism that it might be able to use to approximate its latitude. As we will discuss, hatchling loggerheads have been shown to have this ability.<span>A second geomagnetic parameter that varies across the surface of the Earth is the strength or intensity of the field. Although intensity varies somewhat less predictably than inclination, the general trend is that the field is strongest near the magnetic poles and is weakest near the equator. Hatchling loggerheads have also been shown to detect magnetic field intensity.Important Features of the Earth's field:<span><span>Inclination angle: The angle at which the magnetic field lines intersect the surface of the earth. This angle ranges from 0 degrees at the equator to 90 degrees at the poles.</span><span>Intensity: The magnetic field also varies in strength over the earth's surface. It is strongest at the poles and weakest at the equator.</span></span></span></span>
Labor is usually described as hard, physical work. The best answer would be C. work for which people get paid.
Answer:
Pi Scavenger Hunt
By: Holly T.
6 US state flags which include circles in their design
7 Recipes for different kinds of pies
1 US city with a ZIP code containing the first 5 digits of pi -- beginning with the 3
Apple Pie
Blueberry Pie
Chocolate Chip Cookie Pie
Answer:
D. Plastic sheeting, ultraviolet lights, dams, mechanical equipment and pesticides
Explanation:
The agriculture has changed significantly in the past couple of centuries. With the start of the industrial revolution, the agriculture was gaining more and more products and technologies to make it make easier for working, safer from pests, providing artificial conditions for the plants, and having higher quality and quantity. The mechanical equipment made the work much easier, cheaper, quicker, and more efficient, replacing lot of labor force. The pesticides have contributed to minimizing the effects of the pests. The dams are providing water for the plants where there's not enough in certain periods of the year. The plastic sheeting manages to stop weeds from growing, keeping higher temperature and moist for the plants, making them grow better and quicker. Some plants do not receive enough sunlight, or have to grown in regulated conditions, so the ultraviolet lights provide the needed light for them to prosper and perform photosynthesis.
