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MAVERICK [17]
3 years ago
10

!HURRY! 20 POINTS

Biology
2 answers:
Verizon [17]3 years ago
5 0

Answer:

Many Middle Eastern countries have been transitioning from largely rural living to urban living. City populations are growing quickly as people move to find jobs. However, environmental problems have come with this rapid urbanization. Many urban areas are experiencing air and water pollution. Air pollution is occurring due to the region's reliance on toxic energy sources, oil and gas. Oil and gas release emissions into the air when consumed by factories or cars. Cities are also experiencing water pollution issues due to a lack of waste treatment options. Without places to dispose of waste, people are dumping sewage and industrial waste into water sources. Finally, urban coastal areas are having problems with coastal degradation. Soil erodes and wildlife habitats are destroyed as land is changed for urban development.

Explanation:

Andrews [41]3 years ago
3 0

Answer:

Many Middle Eastern countries have been transitioning from largely rural living to urban living. City populations are growing quickly as people move to find jobs. However, environmental problems have come with this rapid urbanization. Many urban areas are experiencing air and water pollution. Air pollution is occurring due to the region's reliance on toxic energy sources, oil and gas. Oil and gas release emissions into the air when consumed by factories or cars. Cities are also experiencing water pollution issues due to a lack of waste treatment options. Without places to dispose of waste, people are dumping sewage and industrial waste into water sources. Finally, urban coastal areas are having problems with coastal degradation. Soil erodes and wildlife habitats are destroyed as land is changed for urban development.

Explanation:

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How do ice cores, tree rings & index fossils provide valuable information about the past?
frez [133]

Tree rings are annual growth rings and their thickness indicates how growing conditions were for that year. Index fossils in their type and frequency are indicative of the environment that those organisms grew in and how prolific life was then in that environment. Ice cores drilled through glaciers and ice sheets like in Antarctica tell us about such things as the concentration of greenhouse gases like carbon dioxide (as bubbles in the ice layers) and also about climatic  conditions in glacial and interglacial periods.


4 0
3 years ago
which of the following statements about gene flow is false? group of answer choices it leads to divergence and the formation of
Alex Ar [27]

The answer which is false is, gene flow leads to divergence and the formation of new species.

What is speciation?

For speciation to occur two populations must be prevented from interbreeding.

This means that populations must become isolated from on another through the geographical or biological barriers.

If populations remain isolated long enough, speciation will eventually occur because of changes accumulated in population due to natural selection.

What is gene flow?

Geographical isolation hampers gene flow because of spatial separation which in turn leads of reproductive isolation due to the inability of meeting gametes to leads.

It causes genetic drift due to the barrier of gene flow between them and parent species.

Certain alleles get fixed into population due to inbreeding in a smaller population while other gets eliminated, this leads to formation of new alleles and new gene pool, so-called progressive genetic divergence.

Finally there is the formation of new species when genetic variation are accumulated for several generations.

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7 0
1 year ago
Read 2 more answers
What is fire exclusion?
Nesterboy [21]

Answer:

First, “fire suppression” is the act of extinguishing or fighting fires, while “fire exclusion” is the defacto policy of trying to eliminate fires from the landscape using fire suppression techniques.

4 0
3 years ago
In relation to protein production and packaging in a eukaryotic cell, which step occurs first???
LenaWriter [7]
The answer would be b. in the nucleus DNA instructions are copied as RNA messages. This is called translation. The RNA then takes that information to the ribosome where it is transcribed into amino acids, which will form a polypeptide chain and create a protein! Hope this helped :)
6 0
3 years ago
Which of the following statements is most accurate or true?
attashe74 [19]

Answer:

c. the neutral theory posits that the vast majority of mutations do not influence the fitness of individuals

Explanation:

The neutral theory proposed by Motoo Kimura states that the vast majority of changes at the molecular level (DNA) in a population happens due to genetic drift, not by natural selection, this implies that the mutations are neutral and do not give an advantage to the organisms.  

This means that mutant alleles are preserved due to the randomness of life and not because this alleles give selective advantage over other individuals of the population.

4 0
3 years ago
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