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serg [7]
3 years ago
6

Identify the statement that is true about mass extinctions.

Geography
2 answers:
Lady_Fox [76]3 years ago
4 0

Answer:

A. The mass extinction of dinosaurs occurred at the Cretaceous/Paleogene boundary.

Explanation:

The most known extinction is the associated with the Dinosaurs, which happened at the Cretaceous/Palogene boundary (66 million years ago), although there is still a huge discussion on the causes of such extinction (comet/asteroid, changes in sea level, volcano activity).

Such event meant the dissappearing of two-thirds of the living species on Earth.

Dominik [7]3 years ago
4 0

Answer:

D

Explanation:

Mass extinction is defined as an occurrence that cause a rapid extinction of a large number of species across the earth within a short period of time.

Factors that causes mass extinction are change in climatic condition ,massive volcanic eruption ,and effects of asteroids.

When asteroid impact can ignite a chain of worldwide volcanic eruption which effect can lead to a mass extinction of different species of animal.

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Please help: What effect does eutrophication have in aquatic ecosystems?
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Answer:

The answer is D

Explanation:

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(I hope this helps you! have a wonderful day everyone!)

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3 0
3 years ago
choose five controversial issues within the Israeli-Palestinian conflict. In the “Israeli Point of View” box, you will label the
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The US secretary of state, John Kerry, says negotiations on borders should be based in the pre-1967 "green line" – the armistice line drawn in 1949 at the end of the war that followed Israel's declaration of a state – with agreed land swaps to compensate for Jewish settlements in the West Bank that would be incorporated into Israeli territory. For Israel, this would mean giving up settlements deep inside the West Bank. The rightwing Jewish Home party, a key member of the coalition, has declared this a “red line”. The 1967 line is broadly acceptable to Palestinian negotiators, but the actual route of the border and land swap details are crucial.

Jerusalem

Both Israel and the future state of Palestine want Jerusalem as their capital. Israel, which annexed East Jerusalem after the 1967 war, rejects any division of the city. The international consensus is that Jerusalem would have to be the shared capital of both states. But recent speculation suggests that the framework agreement may refer to the Palestinian capital in “greater Jerusalem” - which could mean areas cut off from the city centre and holy sites by the separation wall. This would be unacceptable to the Palestinians.

Security

Israel wants to maintain a long-term military presence in the Jordan Valley, a corridor of land in the West Bank adjacent to the Jordan border, which is under its control. It says this is vital for its security. The Palestinians say they will not accept the continued presence of Israeli forces within their state, and they must control their own borders. The US has suggested that Israel maintains a military presence in the Jordan Valley for a limited period of time.

Refugees

The Palestinians insist that those people – and their descendants – who were forced to flee in 1948, when Israel declared its state amid a bloody war, must have the right to return to their former homeland. Around 5 million Palestinians are registered as refugees. Israel refuses to countenance the return of any refugees, saying an influx would endanger the Jewish character of the state. Previous negotiations have suggested allowing a symbolic number of refugees to return, plus compensation for others.

The Jewish state

Israel insists that the Palestinians must recognise it as a Jewish state ahead of negotiating the details of a deal. The Palestinians reject this, saying the nature of the state of Israel is not their business, and no other country has been required to recognise it as a Jewish state. Such a move would disregard Israel's Arab population, effectively relinquish the right of return for Palestinian refugees and erase the Palestinian historical narrative. Kerry may propose that the Palestinians recognise the Jewish state at the final stages of a deal.

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