| You are here: Almanahj Website ⇒ American curriculum ⇒ 7th Grade ⇒ Geology ⇒ Term 1 | ||
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Worksheet about Earth Organisms | ||
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| Subject: Geology | ||
| 7th Grade | ||
| Term 1 | ||
| Year: 2023/2024 | ||
| Size: 482KB | ||
| Number of clicks: 132 | ||
| Publish date:November 29, 2023 | ||
| Added by: Eman | ||
| Last download date: 2024-09-13 06:56:57 | By: theodor VELEZ2021 | |
| File info: Earth is teeming with a wide variety of organisms, ranging from microscopic bacteria to complex multicellular organisms. Here are some key categories and examples of Earth's organisms: 1. Bacteria: Bacteria are single-celled microorganisms that are found in nearly every environment on Earth. They come in various shapes and sizes and play crucial roles in ecological processes. Examples include Escherichia coli (E. coli), which can be found in the human gut, and Cyanobacteria, which are photosynthetic bacteria that contribute to oxygen production through photosynthesis. 2. Archaea: Archaea are another group of single-celled microorganisms that were once classified as bacteria but are now recognized as a separate domain of life. They often thrive in extreme environments such as hot springs, deep-sea hydrothermal vents, and salt flats. Methanogens, which produce methane gas, are an example of archaea. 3. Protists: Protists are a diverse group of eukaryotic microorganisms that do not fit into other kingdoms such as plants, animals, or fungi. They can be unicellular or multicellular and are found in various habitats, including freshwater, marine environments, and soil. Examples of protists include amoebas, algae, and paramecia. 4. Fungi: Fungi are eukaryotic organisms that include familiar organisms such as mushrooms, molds, and yeasts. They obtain nutrients by breaking down organic matter in their environment. Fungi play essential roles in decomposition, nutrient cycling, and symbiotic relationships. Examples include the common bread mold (Rhizopus) and the yeast Saccharomyces cerevisiae. 5. Plants: Plants are multicellular, photosynthetic organisms that form the basis of terrestrial ecosystems. They convert sunlight, carbon dioxide, and water into energy through photosynthesis. Plants range from small mosses and ferns to towering trees. Examples include oak trees, roses, and wheat. 6. Animals: Animals are multicellular organisms that are heterotrophic, meaning they obtain energy by consuming other organisms. They exhibit a wide range of forms, behaviors, and ecological roles. Animals can be found in diverse habitats, including terrestrial, freshwater, and marine environments. Examples include mammals such as dogs and cats, birds, fish, reptiles, amphibians, and invertebrates like insects, spiders, and mollusks. These categories represent a broad overview of Earth's organisms, but it's important to note that there is incredible diversity within each group, with countless species occupying various ecological niches. The interactions and interdependencies among these organisms contribute to the complex web of life on our planet. | ||
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