Ecological interactions (article) | Ecology | Khan Academy
Five Types of Ecological Relationships Symbiosis refers to a close relationship in which one or both organisms obtain a His specialty is tumor biology. Students watch videos and discuss ecological relationships with a focus on observing symbiosis. Then they classify the ecological relationships they observe as. An ecological relationship is the relationship between an organism in its ecosystem. All organisms in an ecosystem are connected in one way or another. Each interaction depends on Main article: Competition_(biology). Competition is when.
Sciencing Video Vault Mutualism: Everyone Wins Mutualism describes an interaction that benefits both species. A well-known example exists in the mutualistic relationship between alga and fungus that form lichens. The photsynthesizing alga supplies the fungus with nutrients, and gains protection in return. The relationship also allows lichen to colonize habitats inhospitable to either organism alone. In rare case, mutualistic partners cheat. Some bees and birds receive food rewards without providing pollination services in exchange.
These "nectar robbers" chew a hole at the base of the flower and miss contact with the reproductive structures.25. Interaction in ecosystem
As an example, cattle egrets and brown-headed cowbirds forage in close association with cattle and horses, feeding on insects flushed by the movement of the livestock. The birds benefit from this relationship, but the livestock generally do not.
Often it's difficult to tease apart commensalism and mutualism. For example, if the egret or cowbird feeds on ticks or other pests off of the animal's back, the relationship is more aptly described as mutualistic. For example, a herd of elephants walking across a landscape may crush fragile plants.
Amensalistic interactions commonly result when one species produces a chemical compound that is harmful to another species. A technological world requires that humans develop capabilities to solve technological challenges and improve products for the way we live. Each area of technology has a set of characteristics that separates it from others; however, many areas overlap in order to meet human needs and wants.
Energy is neither created nor destroyed. Energy can be transformed from one form to another, but transformation between forms often results in the loss of useable energy through the production of heat.
Solid, liquid and gaseous earth materials all circulate in large scale systems at a variety of time scales, giving rise to landscapes, the rock cycle, ocean currents, weather, and climate.
Technological design is a creative process that anyone can do which may result in new inventions and innovations. Technological literacy is the ability to use, assess and manage technology around us. Technology is created, used and modified by humans.
The cell is the basic unit of structure and function for all living things.
All living things are made up of smaller units called cells. All multicellular organisms have systems that interact with one another to perform specific functions and enable the organism to function as a whole. An object will stay at rest or continue at a constant velocity unless acted upon by an external, unbalanced force. Batteries store chemical energy and transform it into electrical energy. Bio-related technologies are the processes of using biological mater to make or modify products.
Bio-related technologies are the processes of using biological organisms to make or modify products. Cells carry out the many functions needed to sustain life.
Cells grow and divide thereby producing more cells.
Cells take in nutrients that they use to provide energy to carry out their life functions. Communication is the process of composing, sending, and receiving messages through technology.
Communication is the process of composing, sending, and receiving messages using technological devices. Construction is the process of turning materials into useful structures. Construction is the process of turning raw materials into useful structures. Decisions about the use of products and systems can result in expected and unexpected consequences.
Different body tissues and organs are made up of different kinds of cells.
- Ecological relationship
Earth materials rocks and soils can be classified by their composition and texture and those features can be interpreted to infer the history of the material.
Energy and power technologies are the processes of converting energy sources into useful power. Energy and power technologies use processes to convert energy into power. Energy appears in different forms and can be transformed within a system.
Energy can be transformed within a system or transferred from one system to another or from a system to its environment in different ways. Thermal energy is transferred from warmer objects to cooler objects. Mechanical energy can be transferred when two objects push or pull on one another. Electromagnetic energy can be transferred when an electrical source such as a battery or generator is connected in a complete circuit to an electrical device. Chemical energy is transferred when particles are rearranged in a chemical reaction.
Energy from the sun warms air and water, which creates moving currents within them. Every organism has a set of genetic instructions that determines its inherited traits. Celestial revolutions are caused by gravitational attraction. Friction is an example of an electromagnetic force that opposes motion between two surfaces. Heat energy is usually a by-product of an energy transformation.
Heat flow from the earth and motion within the earth lead the outer shell of the earth to move around in large rigid pieces plates and leads to the creation and destruction of ocean basins, motion of continents relative to one another, earthquakes, volcanic eruptions, and development of mountain belts. Heat moves in predictable ways, normally flowing from warmer objects to cooler ones, until the objects reach the same temperature. Human activities change land cover and land use patterns, add or remove nutrients from ecosystems and modify some of the fundamental cycles of the earth system, including the carbon cycle.
These changes can have unexpected and far-reaching effects due to the complex interconnections among earth systems.
Biological interaction - Wikipedia
In a technological world, inventions and innovations must be carefully assessed by individuals and society as a whole. Innovation is the process of improving an existing product, process, or system. Innovation is the process of modifying an existing product, process, or system to improve it.
Interaction of circulating air masses gives rise to a wide variety of weather phenomena including fronts, mid-latitude cyclones and anti-cyclonesand severe weather tropical storms, tornados, severe thunderstorms, etc. Invention is a process of creating new products, processes, or systems.
Invention is a process of turning ideas and imagination into new products, processes, or systems. Inventions and innovations must be carefully assessed by individuals and society. Large scale wind patterns drive surface currents in the oceans and affects weather.
Manufacturing is the process of turning materials into useful products. Manufacturing is the process of turning raw materials into useful products. Mass is a measure of the amount of matter in an object.
Mechanical advantage, using less force over a greater distance, allows the same work to be performed with less effort. Moving electric charges produce magnetic forces and moving magnets produce electric forces.
People select, create, and use technology. Plants transform light energy into chemical energy, which then can be used by other living things. Safety is a preeminent concern for all technological development and use.
Safety is one of the most important concerns for all technological development and use.