Answer:
A feature of the reduction in death rates has been the increased excess mortality of males. There have also been big and rapid reductions in death rates in many developing countries, even in the absence of important improvements in living standards. Antibiotics and insecticides have made a major contribution to this movement in the last twenty years. It is unlikely that death rates will fall as rapidly in the next few decades as in the recent past in either developed or developing countries.
Answer:
Light is made up of wavelengths of light, and each wavelength is a particular colour.
Explanation:
The colour we see is a result of which wavelengths are reflected back to our eyes. The visible spectrum showing the wavelengths of each of the component colours. The spectrum ranges from dark red at 700 nm to violet at 400 nm.Apr 4, 2012
Answer:
<u>True. cover 71% of the entire earth</u>.
Explanation:
- The oceanic mass found ver the earth is well-known mass reserves of 97.3% of all waters in the world. Most Of it exists in salty forms and rest 3% is in the form of lakes and glaciated bodies as the next big reservoirs.
- They are also considered as the carbon sinks, constantly absorbing the carbon dioxide gas, the Atlantic Ocean covers an area of 82.4 km square with a volume of 323.6, followed by the Pacific Ocean, with 165.2 km area and a volume of 707.6, and the Indian Ocean has an area of 73.4 km and volume of 291.0 km cube.
- Variability is an important component of the oceanic water there is also water in the earth's mantle and is available at a temperature of 1,100 degrees celsius.
