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Much evidence states the adverse effects of climate change. These effects are truly affecting humans among other living organisms. But this tale is not so new! The adverse effects trackback since human evolution. How did climate change affect early humans?
It changes human traits. The climate of the earth is irregular. It has always been since ancient times. The planet is in drastic conditions since early humans. They struggled between dry seasons and moist periods. They faced thaws and freezes.
However, ancient humans passed all climate changes. How? Well, we are living proof! How did climate change affect early humans? But, this does not mean it didn’t affect humans. Much evidence proves it affected human traits. And why will it not? Look at all the extinct species.
Climate change plays a major role. So, it’s also true in human scenarios. Scientists are looking for concrete proof. They think climate change triggers human evolution. For example, humans can’t adapt to huge climate change. Well, not instantly!
But they can live in frequent changes of weather. So, evolutionary events are related to clime changes. It is a true possibility! Australopithecus afarensis (Lucy) were extinct roughly 3 million years ago. Additionally, Homo came into exitance. We are members of this genus.
They had bigger brains, unlike us. It is also the era that witnessed stone tools. Now, around 1.5 millions year homo erectus appears. Here we witness double-bladed axes tools. They had new characteristics. These were never seen before.
Here ancient humans got out of areas. It was the first time humans ever did that. These events witnessed climate change. And this was no simple climate change. It was a drastic one! What happened next? Keep on reading to know!
1. How Did Climate Change Affect Early Humans: The Evolution
So, we know a climatic niche was in force during these times. Since homo species came around 3 million years ago. Africa was converting to open grasslands from wooded areas. The clime was dry. It was the main contribution to this change.
It also justifies that they learned to walk upright. Earlier, they were in the habit of climbing. But much evidence is present to generate facts. They state seafloor offers more insight into climate change. There are large-scale shifts in the seafloors and costs. They were not found on the land.
They appear as a climatic layer. Layers have bands of light and dark colour. These bands prove two different times of variable environments. Yet again, we are not talking about the present. It’s the time of human evolution. The dark bands depict ancient monsoons. They prove the dark dirt of the sea.
Additionally, the light band proves wet periods. They have layers of fossilized plankton. These bands show a very dry and wet period of the earth. This time repeats every 20,000 years. It is a regular cycle. It shows that Earth’s orbit changes sunlit that hits the planet. They reduce and increase the sunlight after a particular period. Geologic tie scales trace this period.
One of the most prominent climate changes occurred 3 million years ago. They appeared after a million years. These two are the major early human evolution periods. Modern Africa has much evidence. This evidence witnesses these climate changes.
The great rift valley experiences early human evolution. Many reaches occur in this place. One of the research states that rainfall changes result in lake changes.
The lakes disappear and appear with a change in rain. They state these changes co-occur with human evolution. It is not a coincidence!
2. Climate Change
Paleoanthropologists are the scientist studying human evolution. They have a variety of thoughts about climate change. They propose climate change results in early human development. Human evolution has seen diverse species.
The adaptations and habitats change over time. These adaptations result in new tools and walking habits. It also widens large brands and prolongs maturation. It also results in complex human behaviours. And not to forget, technology! How Did Climate Change Affect Early Humans?
Climate change and early human evolution coincide. It includes wide climate fluctuations. The seasons were dry and wet. Climate change also relates to the lifetime of hominin species. They affected our species. And to which species do we belong?
Homo sapiens! The isotopes of oxygence since we can remember is also evidence. There is evidence of isotope in microscopic skeletons. They find them on the seafloor. It indicates climate change over time. It also shows glacial ice indication.
3. Environment Change And Adaptations
Every organism faces different climate changes. Some changes are cyclical. These changes repeat in a short time. They happen daily or seasonals. These are due to temperature and precipitation. Whereas, some climate changes repeat after long periods.
These affected early humans in a great way. They witness a drastic change in temperate and rain. It also results in vegetation changes. The warm climates converted into cold climates. The woodlands changed into grasslands. And the opposite is still true!
Uplifts and earthquakes also represent climate change. They affect early humans. Tectonic activity is another example. They change the elevations in a lake. Also, they change the size and locations of rivers. Other climate change results in forest fires.
They also result in volcanic eruptions. They change availability of the food. It also changes water and shelter. These changes do not last up to one day. They last for several years. Early humans didn’t know about climate change.
They were uncertain about the effects and complications. So, it was harder for them to adapt. It raises instability. Their survival was also uncertain! Many human groups had living preferences. It means that they were adapted to a particular habitat.
So, there are three options for habitat change. First, they move back to their old habitat. Second, they adapt to new habitats and genetics. And what are the last options? Well, it is very simple. They die! Though, humans have characteristics to adapt. It is also a cause of evolution.
4. Climate Change Leading To Adaptation
Researchers have many ideas about climate change. There are many climate factors affecting human evolution. Early humans were not in the habit of upright walking. They were in the habit of jumping the trees. So, this change is due to grasslands. It results in more upright walking.
Many human changes are the result of climatic change. So, climate change results in adaptations. Those who can’t adapt are left behind. Fossils of hominin are not found in more diverse environments. They are found in environments in which they didn’t adapt.
5. Fossil Analysis And Food Changes
How Did Climate Change Affect Early Humans? Well, you can take a look at the fossil sites! Fossil records are rich in data. They help to find out the environmental records of all humans. Hominin fossil sites show what humans ate during the climate changes. These fossils also give an idea about homes and habitats.
We know Africa evolved into a grassland environment. Scientists tell that humans experience diverse food options. Especially during climate variability. So, scientist test homo tooths. They see eating habits and diverse habitats.
These divide between other foods and grasses. Geochemical proofs carcass processing flexibility. They show changes in behaviours. Also, they show large migrations. It is almost like homos living in a different mode. It also shows the scenarios of other species.
They died without a proper diet. Here are many theories about human evolution. Every theory can be correct in its way. But every period in human history experiences climate change. These changes result in different human traits. Middle stone age also experiences climate change.
It was about 30,000 years ago. They result in wet conditions. Here we are talking about south africa. This period introduces shell jewelry and symbolic engravings. It was a cultural change. The last glaciation resulted in agriculture. It is almost 10,000 years ago.
But later human evolution results in smaller brains. It is when the climate was stable. Many researchers state that climate change affects humans more than animals. Humans tend to adapt more than plants and animals evolve.
6. Climate Change And Evolution Of Hominins
Many research state that hominins were not in only one habitat. Indeed, they were found in different habitats. These habitats were different in specific environments. They could have different environmental toleration. Homo travelled from Africa to Asia.
Now, the homo genus was found in Asian locations. It is about 1.9 million years ago. They were also found in far north Asia. Early homo eratus was found 1.7 million years ago. They live in grasslands. Forests and mountains surrounded them.
They used lava to make tools. It is about Dmanisi in the Republic of Georgia. Now, 1.7 million years ago they were found in China. The habitat was a mixture of forests and grasslands. It also has bushlands. They were also found in Java 1.6 million years ago.
This environment has coastal, river, marine, and grassland habitats. So, this proves the fact! Homininis lived in different habitats. They could adapt. The adaptation was not easy.
But they have no other choice. But every location faced a drastic climate change. Monsoons, rains, and aridity also change regularly. Yet again, climate change has a major role in every activity.
7. Hominins Preserve
Environmental change and climate change is the reason behind adaptations. But, it also causes the extinction of species. There is also an extinction of mammal species. It is in the south of Kenya region. All the phenomena are due to climate change.
An archaeological record represents large dramatic shifts. There are also changes in the chemistry of lakes. They dry up and have small wetlands. So, that leaves streams for the water’s main source. There are many volcanic eruptions.
They converted lands into ash. It changes the ecosystem’s properties. It killed many species. Natural selection also has effects on climate change. 7-3 million ago saw a repeat in climate instability. So, the species were modern. They replaced old species. Also, they were in smaller sizes.
8. How Did Climate Change Affect Early Humans: Major Effects
There are many habitats having fossils of hominins. Some fossils are present in wooded habitats. While other fossils present different geographic areas. Every fossil belongs to a different group of the same species. While some remains are present in different areas.
They were engaged in grazing animals. These fossils do not only show human properties. They also show different climate changes. They are associated with floods and desertification. So how did climate change affect all humans? Let’s see how!
8.01 Change In Moving Habits
The first skeleton formation was around 4 million years ago. It helps to adjust according to moisture changes. It also depicts vegetation change. Lucy is the best example of skeleton adaptability. It is about 3 million years ago.
It has a structure similar to the human hip bone. They also have knee joints and long arms. But, they had longer fingers than humans. They had flexible feet for climbing. This characteristic makes easter move more. This characteristic is Ardipithecus ramidus.
8.02 Introduction Of Stone Tools
The first stone tools were introduced 3.3 million years ago. These tools also suggest versatility. They show early humans trying to adjust to changing climate. Simple tools teach cutting and crushing floods. They presented a wide food activity for early humans.
Early humans ate large animal meats. They also use told to grind plants. Although, tool-making develops due to climate change. They can carry tools over large distances. Also, transporting stones helped early humans to adapt to different environments.
Early humans found a new way to adapt. It is by creating new tools. Here we are talking about 400,000 million years ago. So, smaller tools replace bigger tools. This evidence is present in the Middle stone age.
So, early humans had new ways to get food. They could create tools like arrow shafts. Then they started using tools for other use. Early humans began hunting. Some of these tools were important in colder climate change.
8.03 Trading And Reginal Exchange
Soon, early humans tend towards modern humanization. It shows human evolution. They started trading and regional exchange. Early humans have larger brains. So, it was more complicated to socialize. Hominins started trading around 130,000 years ago.
It was an essential change during climate instability. Sometimes, early humans could not find a material or tool especially, around their habitat. So, they depend on other interactions to get materials. They create networking during droughts or famines.
So, they maintain relationships among different communities. It was essential. They could live in other areas during climate change. A change in early humans due to diverse survival challenges, to adapt to environmental variability!
9. How Did Climate Change Affect Early Humans: Overall Observations
You must think climate change affects today’s world. Well, yes it does. But it affects the world from its existence. The evolution of humans is due to climate change. There are many factors responsible for the evolution. But climate change is the main!
The earliest climate change trace to the African region. First, they were wet and all marshy. This is about many millions of years ago. It comprises forest. There were varieties of trees. So, every human develops abilities to jump. However, they were not in the habit of upright walking.
So, they adapted to new ways. However, sooner than later, the adaptations change. Dry climate results in no trees and open land. So, they got into the habit of upright walking. They move to new places. They started walking on two legs. But climates do not only affect humans.
It affects plants and animals. Climate change results in plant evolution. So, it changes every humans eating habits. So, they also need new teeth to eat new foods. That’s why early human teeth changed. Some need large teeth to eat grass. Whereas, some need small teeth to eat meat.
Last but not least, homo sapiens! Climate change resulted in the evolution of early humans. Evolution made homo sapiens. So, they started using tools. Early humans used these tools for many activities. They could hunt and kills. They could protect themselves from dangerous species.
Early humans learned to adapt. Early human species now create new tools as soon as climate change. How Did Climate Change Affect Early Humans? Every kind of early human evolution took to play with climate change. It is not a coincidence. It rather coincides! And, so will the evolution continue with climate change!
Keynote
There is no doubt that climate change results in evolution. There are many evidences to prove this fact. Climate change made it possible for early human ancestors to adapt. Just think about it. If the climate model didn’t occur, they couldn’t adapt.
So, they would have become extinct after a few million years. That’s why today humans can adapt to different habitats. They are cold and hot. They also include moist and arid. Also, they can adapt to different variations. We are an example of one of those human species that survived past climate change.
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