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Air, water, shelter and food
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- Animals need air, water, shelter and food to survive. Our lungs bring in oxygen and remove carbon dioxide. But other animals breathe in all sorts of different ways. Animals like worms breathe right through their skin! All animals need to drink water to stay alive; it breaks down their food and helps their brains work properly.
www.bbc.co.uk/bitesize/articles/z343f82
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Why is it necessary to survive?
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Why do living things need energy?
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Is there a survival aspect to living organisms?
The genes that survive do so by incorporating some information about their environment. Sometimes the relevant environment is the chemicals surrounding the organism. Sometimes the environment is other genes, such as genes for a female to mate for a male with a large tail in peacocks.
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, adaptation, growth and development, homeostasis, energy processing, and evolution. When viewed together, these characteristics serve to define life.
- Lisa Bartee, Walter Shriner, Catherine Creech
- 2017
- Order. Organisms are highly organized, coordinated structures that consist of one or more cells. Even very simple, single-celled organisms are remarkably complex: inside each cell, atoms make up molecules; these in turn make up cell organelles and other cellular inclusions.
- Sensitivity or Response to Stimuli. Organisms respond to diverse stimuli. For example, plants can bend toward a source of light, climb on fences and walls, or respond to touch (Figure 2).
- Reproduction. Single-celled organisms reproduce by first duplicating their DNA, and then dividing it equally as the cell prepares to divide to form two new cells.
- Growth and Development. All living things increase in size and/or change over their lifespan. For example, a human grows from a baby into an adult and goes through developmental processes such as puberty.
Animals need air, water, shelter and food to survive. Our lungs bring in oxygen and remove carbon dioxide. But other animals breathe in all sorts of different ways.
Why do living things need energy? Compare and contrast the two basic ways that organisms get energy. Describe the roles and relationships of the energy molecules glucose and ATP.
- Christine Miller
- 2020
4 days ago · All living things consume energy (they eat food), and use that energy for work, play, and growth. All living things exhibit “homeostasis,” which is the ability to maintain a steady internal environment regardless of their external environment.
Feb 5, 2024 · All living things need oxygen, except for some bacteria and a few tiny animals that don’t. You might be surprised to learn how many ways there are to get oxygen – breathing is only one of them....
