sea level can rise in response to thermal expansion, atmospheric pressure changes, changes in sea ice extent.
<h3>What happens if sea levels rise?</h3>
The main physical effects of sea level rise are beach erosion, inundation of deltas, flooding, and the loss of numerous marshes and wetlands. As a result of saltwater intrusion, increased salinity will probably become a concern in coastal aquifers and estuary systems.
<h3>How is sea level rise measured?</h3>
Tide stations and satellite laser altimeters are the main tools used to measure sea level. The height of the sea as measured along the shore in relation to a particular place on land is what tide stations all around the world tell us about what is happening locally.
<h3>How will sea level rise affect us in the future?</h3>
And as the oceans get larger due to a rising climate, more people may be at risk of coastal flooding by 2100, putting up to 410 million people at risk. The increase of coastal towns as a result of building and development also puts more people at risk.
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Since M is the midpoint of the segment AB
then measure of AM and MB are equal. So to solve the value of x, equate the following
measurement
AM = MB
50 – 3x = -20 + 4x
70 = 7x
<span>X = 10</span>
i. Using fossil evidences
ii. Similar rock lithologies at the edges of continent
iii. Climate clues
iv. Fitting of the continents into a puzzle
v. Sea floor spreading
Explanation:
Pangea was a super-continent on the earth which formed about 330 million years ago during the Paleozoic and began breaking up during the early Mesozoic, about 175 million years ago.
Most of the present day continents formed as a result of the separation of the Pangea in the early Mesozoic.
The first scientist to propose the existence of this super-continent was Alfred Wegener in 1912. He suggested the continental drift hypothesis to explain the separation of the land masses.
Today, the theory has been revised to the theory of plate tectonics which provides a better mechanism to understand the drifting of the continents.
Here are some of the evidences to support the existence of Pangea;
- Using fossil evidences: Mesosaurus, a reptile animal that lived during the Permian, was found in both South America and Southern Africa. Since this animal could not swim nor fly, only a jointed landmass could have made them present in both continents.
- Similar rock lithologies at the edges of continents: rock formations at the Western edge of Africa and South - Eastern part of Brazil matches with one another and have been believed to be once joined together.
- Climatic clues such as glacial tills that are confined to temperate and polar regions have been found in tropical regions.
- Wegener fitted the present day continent into a giant supercontinent and this provided a visual support for his claim.
- Evidences from sea floor spreading revealing magnetic reversals at divergent margins suggests the prevalence of plate tectonics i.e moving plates on earth.
This among many other evidences underscores the existence of a supercontinent called Pangea.
Panama, nicaragua that’s the answer for the countries it borders
Answer:
It determines people's lifestyles, as they adapt to the available food and climate patterns.
Explanation: