Please help me write a speech!!
It needs to include the impacts of human activities and their solutions on the Tropical Savanna in South Africa!
Please help, the best answer would surely get a thanks, marked as brainliest, I would follow the person, for sure!!
Answers
Answer:
Savannas are a type of grassland. They are flat, with scattered and widely spaced trees. Savannas are found throughout the world in both temperate and tropical regions. They can be wet or dry. Some of the world's largest tropical savannas are found in Australia, Africa, and South America.
In the United States, two of our most well known savannas are the longleaf pine savanna of the Southeast United States and the oak savannas of the Midwest. Both of these ecosystems are dry savannas. Periodic fires prevent many trees from growing and give savannas their open, grassy nature. They are home to many rare and unique herbs. These delicate plants thrive in the sandy and well-drained soil. And they get plenty of sunlight!
oak savanna
oak savanna
Perhaps the best-known savannas are the extensive plains of Africa. These tropical grasslands have both a wet season and a dry season. Many animals have adapted to living in this habitat . Cheetahs, lions, and vast herds of wildebeest and other antelopes migrate with the seasons to avoid drought.
African savana
African savana
Around the world, savannas are threatened by human actions like logging, development, conversion to agriculture, over-grazing by livestock, and introduction of non-native plant species. For example, in the drier parts of the African savanna, overgrazing by goats and cattle has removed most of the vegetation that holds the soil in place. This has created desert-like conditions. And most of the southeastern United State's longleaf pine savannas have been affected by logging.
How can you protect savanna ecosystems? Here are some ideas:
Respect and conserve grasslands where you live (many people do not think grassland habitats are as important as forests or wetlands).
Learn about savannas and teach others about them.
Volunteer for a savanna restoration project.
Support conservation organizations that protect savannas and the plants and animals that depend on them.
Explore More:
Welcome to the Dzanga-Sangha Rainforest! Play this connect-the-dots game to explore how people, other animals, and plants depend on each another.
Answer:
HERE IS YOUR ANSWER.....
Explanation:
Savannas arose as rainfall progressively lessened in the edges of the tropics during the Cenozoic Era (66 million years ago to the present)—in particular, during the past 25 million years. Grasses, the dominant plants of savannas, appeared only about 50 million years ago, although it is possible that some savanna-like vegetation lacking grasses occurred earlier. The South American fossil record provides evidence of a well-developed vegetation, rich in grass and thought to be equivalent to modern savanna, being established by the early Miocene Epoch, about 20 million years ago.
Climates across the world became steadily cooler during that period. Lower ocean surface temperatures reduced water evaporation, which slowed the whole hydrologic cycle, with less cloud formation and precipitation. The vegetation of midlatitude regions, lying between the wet equatorial areas and the moist cool temperate zones, was affected substantially.
HomeScienceEnvironment
Savanna
ecological region
WRITTEN BY
Jeremy M.B. Smith
Associate Professor of Geography and Planning, University of New England, Armidale, New South Wales. Station Leader, 1996 Australian National Antarctic Research Expedition to Macquarie Island, Australian...
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Alternative Title: savannah
ARTICLE CONTENTS
Savanna, also spelled savannah, vegetation type that grows under hot, seasonally dry climatic conditions and is characterized by an open tree canopy (i.e., scattered trees) above a continuous tall grass understory (the vegetation layer between the forest canopy and the ground). The largest areas of savanna are found in Africa, South America, Australia, India, the Myanmar (Burma)–Thailand region in Asia, and Madagascar.
Savanna
QUICK FACTS
RELATED TOPICS
Grassland
Biome
Tree savanna
Thornbush savanna
Termite savanna
Shrub savanna
Savanna woodland
Grass savanna
Dry savanna
Tropical grassland
Origin
Savannas arose as rainfall progressively lessened in the edges of the tropics during the Cenozoic Era (66 million years ago to the present)—in particular, during the past 25 million years. Grasses, the dominant plants of savannas, appeared only about 50 million years ago, although it is possible that some savanna-like vegetation lacking grasses occurred earlier. The South American fossil record provides evidence of a well-developed vegetation, rich in grass and thought to be equivalent to modern savanna, being established by the early Miocene Epoch, about 20 million years ago.
Climates across the world became steadily cooler during that period. Lower ocean surface temperatures reduced water evaporation, which slowed the whole hydrologic cycle, with less cloud formation and precipitation. The vegetation of mid latitude regions, lying between the wet equatorial areas and the moist cool temperate zones, was affected substantially.
The main regions in which savannas emerged in response to that long-term climatic change—tropical America, Africa, South Asia, and Australia—were already separated from each other by ocean barriers by that time. Plant migration across those barriers was inhibited, and the details of the emergence of savannas on each continent varied. In each region different plant and animal species evolved to occupy the new seasonally dry habitats.
HOPE IT HELPS YOU......