Explanation:
At the center its weight is zero. Or you can argue by symmetry: if the weight is not zero, in what direction would it act?
Answer:
Migration boosts the working-age population. Migrants arrive with skills and contribute to human capital development of receiving countries. Migrants also contribute to technological progress. Understanding these impacts is important if our societies are to usefully debate the role of migration
Answer:
They preserve the entire fossil remain rather than there traces.
Explanation:
- Amber is a fossilized resin from an ancient forest. It used as a healing agent in folklore. It is a product of high pressure and temperature.
- They occur in a wide range of color and many geological records are found in amber hidden fossils. Its main property is to preserve the complete chemical and physical properties of the fossil.
- Oldest known amber was of an arthropod, often found in association with insects. The amber fossils are believed to have been derived from older Eocene deposits. Later formations of glacial drift.
- While a mold of fossil is formed by an animal, plane or other organisms which upon dying to get covered sediments and later its bones are decay due to chemical processes. Mold fossils tell traces of extinct organisms like trail track etc.
- Molds and casts are three-dimensional representations of organisms.
Answer:
Deforestation
Explanation:
Sub-Saharan Africa simply refers to the southern part of the African continent which covers many of the countries. It covers a large geographical area. The area faces a lot of environmental problems that mostly includes the pollution such as water, soil, air, mining activities also affects the area, deforestation, and climate change.
From the above give options, deforestation is the major environmental problem in the Sub-Saharan Africa.
Answer:
east Asia
Explanation:
the tallest bar on the top is the highest %
