A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds.
The cell itself is the smallest fundamental unit of structure and function in living organisms.
In larger organisms, cells combine to make tissues, which are groups of similar cells carrying out similar or related functions.
Organs are collections of tissues grouped together performing a common function. Organs are present not only in animals but also in plants.
An organ system is a higher level of organization that consists of functionally related organs. Mammals have many organ systems. For instance, the circulatory system transports blood through the body and to and from the lungs; it includes organs such as the heart and blood vessels.
Organisms are individual living entities.
All the individuals of a species living within a specific area are collectively called a population. For example, a forest may include many pine trees. All of these pine trees represent the population of pine trees in this forest. Different populations may live in the same specific area. For example, the forest with the pine trees includes populations of flowering plants and also insects and microbial populations.
A community is the sum of populations inhabiting a particular area. For instance, all of the trees, flowers, insects, and other populations in a forest form the forest’s community. Keep in mind that the community level only consists of living organisms. The forest itself is an ecosystem; this is the first level that contains non-living aspects of a given area that impact the living things in that environment.
An ecosystem consists of all the living things in a particular area together with the abiotic, non-living parts of that environment such as nitrogen in the soil or rain water.
The biosphere is the collection of all ecosystems, and it represents the zones of life on earth. It includes land, water, and even the atmosphere to a certain extent.
Answers & Comments
Answer:
1. Biosphere — ex. Earth
2. Ecosystem — ex. Marine ecosystem
3. Community — ex. Forest with trees and wild animals
4. Population — ex. School of fish
5. Organism — ex. bacteria
6. Organ system — ex. circulatory system
7. Organs — ex. heart
8. Tissue — epithelial tissue
9. Cell — egg cell
10. Organelles — ex. nucleus
11. Molecule — ex. sugar (molecules are group of different atoms, whereas sugar compose of carbon, oxygen, and hydrogen)
12. Atom — ex. hydrogen (atoms are simply an element)
Explanation:
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The levels, from smallest to largest, are:
A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds.
The cell itself is the smallest fundamental unit of structure and function in living organisms.
In larger organisms, cells combine to make tissues, which are groups of similar cells carrying out similar or related functions.
Organs are collections of tissues grouped together performing a common function. Organs are present not only in animals but also in plants.
An organ system is a higher level of organization that consists of functionally related organs. Mammals have many organ systems. For instance, the circulatory system transports blood through the body and to and from the lungs; it includes organs such as the heart and blood vessels.
Organisms are individual living entities.
All the individuals of a species living within a specific area are collectively called a population. For example, a forest may include many pine trees. All of these pine trees represent the population of pine trees in this forest. Different populations may live in the same specific area. For example, the forest with the pine trees includes populations of flowering plants and also insects and microbial populations.
A community is the sum of populations inhabiting a particular area. For instance, all of the trees, flowers, insects, and other populations in a forest form the forest’s community. Keep in mind that the community level only consists of living organisms. The forest itself is an ecosystem; this is the first level that contains non-living aspects of a given area that impact the living things in that environment.
An ecosystem consists of all the living things in a particular area together with the abiotic, non-living parts of that environment such as nitrogen in the soil or rain water.
The biosphere is the collection of all ecosystems, and it represents the zones of life on earth. It includes land, water, and even the atmosphere to a certain extent.
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