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Stone Age: Prehistory to 4000 BCE
Bronze Age: 3000 to 1100 BCE
Iron Age: 1100 to 30 BCE, In this era more enhanced accomplishments were made.

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Stone age (Pre-history to 4000 BCE)-

Settlements found

Bronze age (3000 to 1100 BCE)-

Minoan civilization

Mycenaean civilization

Iron age (1100 to 30 BCE)

Greek dark age- 1100 – c. 750 BC, Destruction of settlements and collapse of the socioeconomic system

Archaic period

Classical period

Hellenistic period

Greece was taken by roman empire

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The Classical Period began with the introduction of democracy in Athens. Athens also rose to new heights in art and philosophy. It was during this period that Athens and Sparta fought in the Peloponnesian Wars. Near the end of the Classical Period, Alexander the Great rose to power conquering much of Europe and Western Asia.

Classical Period Time: 510 to 323 Bce

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Stone Age: Prehistory to 4000  BCE
Bronze Age: 3000 to 1100 BCE
Iron Age: 1100 BCE to 30 BCE

In Iron age, Dark age, Archaic Period, Classical Period happened.

Dark age: 1100 BCE, collapse of Mycenean.

Archaic Period: 800 to 479 BCE, vast changes in Greek society, art, architecture, and basically in all parts of Greece.

Classical Period: 510 to 323 BCE, Lots of cultural and theatre change. Peloponnese wars between Athens and Sparta. In this period Democracy was introduced,  and Alexander the Failure died (323 BCE)

Hellenistic Period: 480 to 323 BCE. The Hellenistic period spans the period of Mediterranean history between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire.

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The variety of plant/animal life found on Earth.

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A native species is found in a certain ecosystem due to natural processes such as natural distribution.

Introduced or Foreign or non-native species Introduced species occur in an area where they are not native but were brought there through human influence — either purposefully or accidentally.

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1. Latitude: Climate of a region depends on the latitude where it lies. The Equator gets the most direct sun rays hence the region falling in this latitude has an extreme hot climate. The latitude above the equator and below the equator has less direct and poles receive no or slanting rays.

2. Altitude: Temperature decreases as you move to higher altitudes. So, the mountains are cooler than the plains.

3. Proximity of Water: Large bodies of water, such as oceans, seas, and large lakes, can affect the climate of an area. The water heats and cools more slowly than landmasses. Therefore, the coastal regions will stay cooler in summer and warmer in winter, thus creating a more moderate climate with a narrower temperature range.

4. Prevailing Winds: Prevailing winds bring air from one type of climate to another. For example, warm winds that travel over water tend to collect moisture as they travel; the water vapor in the air will condense as it moves into colder climates, which is why temperate coastal areas often receive heavy rainfall.

5. Landmass:

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The desert biome covers about one-fifth of Earth's surface.

Animals: Camel, Iguana, Llama

The main types of deserts include hot and dry deserts, semi-arid deserts, coastal deserts, and cold deserts.

The Sahara Desert-arid desert

The Atacama in Chile-coastal desert

The Antarctic is an example of a cold desert.

Semi-arid deserts are found in North America, Greenland, Europe, and Asia.

Arid deserts are hot and dry, with very little vegetation. Arid gets so little or no rain. They are hot during the day and cold at night. Animals burrow at day and come out at night. Sahara desert. Great Basin desert
Semi-arid deserts are arid deserts, but they somewhat still receive rain.
Cold Deserts change with the seasons, hot in summer but snow in winter. Cold deserts are found in the Antarctic, Greenland, Iran, Turkestan, Northern and Western China.
Coastal Deserts: As the name implies, coastal deserts are deserts stretching along the sea coast. They are one of the four major types of deserts. Their nearness to the sea gives them unique properties not found in deserts elsewhere. Such deserts are usually found on the western edges of continents with cold ocean currents running parallel to the coast. As the cold currents cool the air above, the air is unable to hold moisture and most of it falls as rain on the sea before it reaches land. Thus, the land alongside the coast with cold ocean currents receives little or no precipitation and turns into a desert.

Oasis??
Oasis is a part of a hot (arid) desert. Oasis is a pool of water found in ze desert, it pops up in spring and is a place where plants grow, animals come to drink water, find shade and more.

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A biome is a large region of the world that has similar plants, animals and other organisms that are adapted to the terrain and weather of that region.

An ecosystem is the interaction of plants and animals with nonliving things and each other. Each organism has a role to play within the ecosystem.

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Grassland biomes consist of large open areas of grass. Trees can be present, but they are infrequent and scattered.

While temperatures are often extreme in some grasslands, the average temperatures are about -20°C to 30°C. Tropical grasslands have dry and wet seasons that remain warm all the time. Temperate grasslands have cold winters and warm summers with some rain.

Grasslands are found in Africa, North America, Central Asia, South America, and near the coasts of Australia. The largest grasslands are in East Africa.

Two main types of grasslands are Temperate and Tropical.
Tropical: They are sometimes called "savannas",   found in parts of Africa, the soil is thin, animals like lions and giraffes live here. Hot all year round.
Temperate: Mostly grass, few trees, and shrubs receive more rain than tropical grasslands. Prairies are part of these. Hot summers and cold winters. There is rain but not too much rain. Rain can support trees and shrubs.

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Many Trees. Important, they absorb carbon dioxide so they are important.

Tropical Forests: They are closest to the equator, have diverse trees, the air is hot and moist. Has most species of trees compared to other biomes...

Temperate Forests: Mainly located in North America, Asia, and Europe, with very fertile soil. Trees are deciduous, they tend to shed every year.

Boreal Forests: Also known as taiga(coniferous forests too), it has very cold temperatures. Made up of evergreen conifers, evergreen means always having leaves. Located in Alaska, Canada, Russia.

These are the three main types, there are more though.

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The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert. Tundra is found in the regions just below the ice caps of the Arctic, extending across North America, to Europe, and Siberia in Asia.

Characteristics:

Dry- Scanty rainfall due to low evaporation.

Permafrost-Below the topsoil, the ground is permanently frozen year-round.

Barren-The tundra has few nutrients to support plant and animal life.
A little amount of Precipitation

Separated: Alpine and Arctic:
Alpine is located on rocky mountain tops, similar to Arctic Tundra in terms of temperature and precipitation.
Arctic Tundra is located in the northern hemisphere.

Low shrubs, mosses, grasses, lichens, and some flowers.
Icy Rivers
polar bears, foxes, Wolves, some birds, Squirrels..
Global Warming, Oil, Hunting are some threats.
Oils and minerals are in solid which is risky.

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70% of earth is water.

In aquatic biome there are fish, dolphin and more.

Freshwater and Saltwater ._.

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A landmass is a large region or area of land. The word is mostly used to refer to lands surrounded by an ocean or sea, such as a continent or a large island.