Biology, 06.03.2020 19:33 lilred58

The extinction rate of terrestrial and freshwater species is currently higher than the extinction rate of marine species. What is the most likely reason for this?

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Answer from: mastertrapper

Human activities is the most likely reason for it

Explanation:

A species is said to be extinct when there are no more individuals in that group, i.e, when a certain species of living beings definitively disappears from the planet. Since the emergence of the Earth, several species have disappeared and these extinctions happened for several reasons. Among the reasons, there are those caused by forces of nature such as earthquakes, volcanoes, changes in the planet's climate, such as glaciations - periods when certain parts of the planet were covered with ice, which caused the death of many beings that lived in those environments. However, in the modern society in which we live, the human being has been the biggest cause of the extinction of species.

The big problem is that the action of human beings has caused great environmental changes, altering the planet's climate, destroying habitats of several species. Human activities have a greater impact on terrestrial and freshwater ecosystems and for this reason the rate of extinction of terrestrial and freshwater species is higher than the rate of extinction of marine species

Answer from: jadalawler3

This is because if human activities.

Explanation:

Human activities on the terrestrial and freshwater habitats of different species or organism has caused and it is still causing the reduction or extinct of the species in those habitats. Man activities that do cause the terrestrial habitat organisms to deplete or go into extinction are desertification , pollution, overexploitation, deforestation, climate change and so on.

Man activities that do cause the freshwater habitat organisms to deplete or go into extinction are overfishing, water pollution or acidification and so on. Man activities are much on terrestrial habitats and freshwater habitats than on with the Marine habitat.

Answer from: Quest

Ithink your answer will be c hope that’s you

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.