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Olenka [21]
3 years ago
15

What methods did geologists use when they first developed the geologic time scale

Geography
1 answer:
Mademuasel [1]3 years ago
8 0
<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
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Please please help me out now​
Anton [14]

An open lake is a lake where water constantly flows out under almost all climatic circumstances. Because water does not remain in an open lake for any length of time, open lakes are usually fresh water: dissolved solids do not accumulate. Open lakes form in areas where precipitation is greater than evaporation. Because most of the world's water is found in areas of highly effective rainfall, most lakes are open lakes whose water eventually reaches the sea. For instance, the Great Lakes' water flows into the St. Lawrence River and eventually the Atlantic Ocean.

In a closed lake (see endorheic drainage), no water flows out, and water which is not evaporated will remain in a closed lake indefinitely. This means that closed lakes are usually saline, though this salinity varies greatly from around three parts per thousand for most of the Caspian Sea to as much as 400 parts per thousand for the Dead Sea. Only the less salty closed lakes are able to sustain life, and it is completely different from that in rivers or freshwater open lakes. Closed lakes typically form in areas where evaporation is greater than rainfall, although most closed lakes actually obtain their water from a region with much higher precipitation than the area around the lake itself, which is often a depression of some sort.

Hope this helps :)

5 0
2 years ago
The short-term effects of marijuana can include __________. A. increased anxiety B. decreased anxiety C. dulled sensory percepti
Savatey [412]
I believe it is C, dulled sensory perception. decreased anxiety is another effect, but it's more long term. 
4 0
3 years ago
Read 2 more answers
According to the Knowledge Article, the French were the first to attempt to build a canal across the Isthmus of Panama. However,
AlexFokin [52]

Answer:

Poor planning, and disease

Explanation:

The obstacles that the French faced while attempting to build a canal across Panama were diseases and poor planning. The French dealt with constant outbreaks of malaria and yellow fever, which slowed construction and caused the deaths of thousands of workers. The French also did not take into consideration the geographical differences between the Suez Canal region and the Panama region. The French had succeeded in building a canal at sea level in Egypt, and they mistakenly thought a similar design would work in Panama. However, the difference in the Atlantic and Pacific Ocean sea levels, as well as the difference in elevation of the Panamanian terrain, prevented them from building a sea-level canal. The United States knew about these two problems when they undertook the project. They took preventative measures by reducing the disease-spreading mosquito population and using a canal-lock system to overcome the elevation obstacle in Panama.

7 0
3 years ago
Read 2 more answers
What climate will countries from the northern and southern hemispheres experience from having the least direct sunlight?(1 point
earnstyle [38]

Winter is the phase of year when countries in the northern and southern hemispheres, respectively, see the least amount of direct sunlight.

December, January, and February in the Northern Hemisphere and June, July, and August in the Southern Hemisphere are the months when a portion of the Earth experiences the least amount of daylight. The Earth's 23.5° axial tilt as it orbits the sun causes solitons and varying solar declinations. This indicates that, during the year, one of the hemispheres is tilted toward the sun and receives the most intense solar rays, while the other receives the least amount of sunlight.

To know more about axial tilt

brainly.com/question/8678564?referrer=searchResults

#SPJ4

8 0
1 year ago
A ptarmigan is a ground-dwelling bird that changes colors with the seasons. In winter, ptarmigans are entirely white. In summer,
sattari [20]

Answer:

Climates that vary

Explanation:

they would only change with the seasons, similar to those in the U.S.

4 0
2 years ago
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