Biology, 09.02.2021 14:00 janeou17xn

What are the effects of overpopulation, how can they be controlled, and why does this matter?

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Answer from: pawfox

Explanation:

Population is growing rapidly, far outpacing the ability of our planet to support it, given current practices. Overpopulation is associated with negative environmental and economic outcomes ranging from the impacts of over-farming, deforestation, and water pollution to eutrophication and global warming.

If population growth is unsustainable, are there humane ways to limit it?

1. Empower women

Studies show that women with access to reproductive health services find it easier to break out of poverty, while those who work are more likely to use birth control. The United Nations Population Fund aims to tackle both issues at once, running microcredit projects to turn young women into advocates for reproductive health.

2. Promote family planning

Simply educating men and women about contraception can have a big impact. When Iran introduced a national family planning programme in 1989, its fertility rate fell from 5.6 births per woman to 2.6 in a decade. A similar effort in Rwanda saw a threefold increase in contraception usage in just five years.

3. Make education entertaining

The US-based Population Media Center gets creative to reach women. Its radio soap operas, which feature culturally specific stories about reproductive issues, have been heard by as many as 500 million people in 50 countries. In Ethiopia, 63 per cent of women seeking reproductive health services reported tuning in.

4. Government incentives

Those at UK charity Population Matters believe there should be a senior government official responsible for addressing population-related issues. They urge governments to promote “responsible parenthood” and say subsidies should be limited to the first two children unless the family is living in poverty.

5) One-child legislation

During China’s high controversial one-child policy, fertility fell from six births per woman in the 1960s to 1.5 in 2014. However, Amnesty International reports that the policy led to coerced or forced abortions and sterilisations. It also disrupted traditional support structures for the elderly and led to a gender imbalance.

Answer from: Quest

Mantle convection is the slow creepingmotion of earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface.[1][2] the earth's surface lithosphere, which rides atop the asthenosphere (the two components of the upper mantle), is divided into a number of plates that are continuously being created and consumed at their opposite plate boundaries. accretion occurs as mantle is added to the growing edges of a plate, associated with seafloor spreading. this hot added material cools down by conduction and convection of heat. at the consumption edges of the plate, the material has thermally contracted to become dense, and it sinks under its own weight in the process of subduction usually at an ocean trench.[3]this subducted material sinks through the earth's interior. some subducted material appears to reach the lower mantle,[4] while in other regions, this material is impeded from sinking further, possibly due to a phase transition from spinel to silicate perovskiteand magnesiowustite, an endothermic reaction.[5]the subducted oceanic crust triggers volcanism, although the basic mechanisms are varied. volcanism may occur due to processes that add buoyancy to partially melted mantle causing an upward flow due to a decrease in density of the partial melt.secondary forms of convection that may result in surface volcanism are postulated to occur as a consequence of intraplate extension[6] and mantle plumes.[7]it is because the mantle can convect that the tectonic plates are able to move around the earth's surface.[8]mantle convection seems to have been much more active during the hadean period, resulting in gravitational sorting of heavier molten iron, and nickel elements and sulphides in the core, and lighter silicate minerals in the mantle.

Answer from: Quest

the titanic would be the correct answer

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