My sweet ecology padlet by Sawsan Deeb https://padlet.com/sawsandeeb/6t2zfocmenag6jbl Made with a dash of my 12A wit en-us 2020-09-24 05:47:15 UTC 2025-12-17 21:12:26 UTC hello@padlet.com Humam Jamal Pyramid of energy 85128 https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774776146 It is a diagram that represents the flow of energy from one trophic level to another. It compares how much energy is consumed by each organism in an ecosystem. The pyramid of energy is upright because energy is lost at each trophic level. When energy is passed from one organism to the other, only 10% of the energy will be passed on and the rest will be lost as heat energy, therefore as you move up the pyramid less energy is available.]]> 2020-09-24 06:15:29 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774776146 Aya Ramadan (Food Webs) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774781825 Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and overlapping food chains in an ecosystem make up a food web.]]> 2020-09-24 06:18:28 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774781825 Hossam https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774782232  Energy loss
In a food chain only around 10 per cent of the energy is passed on to the next trophic level. The rest of the energy passes out of the food chain in a number of ways: it is used as heat energy.

]]> 2020-09-24 06:18:41 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774782232 Alaa Maged (Food Webs) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774782505 A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community. A food web is all of the food chains in an ecosystem. Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemosynthesis, make up the bottom of the trophic pyramid.FOOD WEBS ARE MORE USEFUL BECAUSE IT PROVIDES DIFFERENT ORGANISMS WITH MORE THE ONE SINGLE FOOD SOURCE TO SURVIVE.]]> 2020-09-24 06:18:47 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774782505 ayah bashar https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774783818 primary consumers: organisms that directly feed on producers(plants)
primary consumers are herbivores, they are also the second step in the food chain
ex: caterpillars,hummingbirds 

]]> 2020-09-24 06:19:26 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774783818 Pyramid of numbers (Omar alhalwani) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774785892 1)A pyramid of numbers shows the total number of  individual organisms at each level in the food chain of an ecosystem

2) The pyramidal shape indicates that the number of organisms or species is largest at the bottom, and is narrowing towards the apex]]> 2020-09-24 06:20:29 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774785892 Khaled(pyramid of biomass) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774788637 Biomass is the total weight  of organisms in a given area. Pyramid of biomass shows and compares biomass of different trophic levels within an ecosystem. It shows the mass of producers that are needed to support primary consumers, the mass of primary consumers required to support secondary consumers, and so on along the food chain.

]]> 2020-09-24 06:21:53 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774788637 Mahmoud (pyramid of numbers) 85155 https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774791066 Definition: A graphical representation in the form of a pyramid showing the feeding relationship and the number of organisms at each trophic level.

Pyramid shape:
Largest at the bottom , smallest at the top indicating more organisms at the bottom of the pyramid than at the top.


]]> 2020-09-24 06:23:17 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774791066 Mariam Emad: 12A https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774791351 Producers and definition of food chain:
food chain is circle of life.
  • food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
  • In a food chain, each organism occupies a different trophic level, defined by how many energy transfers separate it from the basic input of the chain. the arrows show the energy transfer between each organism in the food chain.

producers: Producers, or autotrophs, make their own organic molecules. they are autotrophs and can make their own organic molecules using process of photosynthesis.
: depend on sunlight as ultimate source of energy to start food chain, in other words, the main source of energy in a food chain is the sun!:
some examples are protists, plants and bacteria ( which use chemosynthesis, to make its organic molecules)





]]> 2020-09-24 06:23:27 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774791351 Mariam Ahmed https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774792054 Pyramid of Numbers]]> 2020-09-24 06:23:52 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774792054 Reem Ammar https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774793543 A secondary consumer is an organism that eats primary consumers. Secondary consumers are usually carnviores (meat eaters) but can also be omnivores. Secondary consumers aren't always the last step in a food chain. Usually, they are eaten by a larger organism, the tertiary consumer. Some food chains even have a quaternary consumer.

]]> 2020-09-24 06:24:46 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774793543 Rawan Mohamed https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774794115
he group of organisms called decomposers forms the final link in the food chain. They break down dead animals and plants and return vital nutrients to the soil. Some decomposers, like fungi, can be seen without a microscope, but much of the decomposition process is carried out by microscopic bacteria. They secrete enzymes on the surface of the dead organisms to break the organism down 







]]> 2020-09-24 06:25:05 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774794115 Aya Ramadan (Food Webs) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774795380 Organisms in food webs are grouped into categories called trophic levels. Roughly speaking, these levels are divided into producers (first trophic level), consumers, and decomposers (last trophic level). ]]> 2020-09-24 06:25:49 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774795380 Suhaila Ayman (pyramid of biomass) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774799451 A biomass pyramid is a diagram that compares the biomass ( amount of living material) of different trophic levels within an ecosystem. It shows the mass of producers that are needed to support primary consumers, the mass of primary consumers required to support secondary consumers, and so on. It takes the organism's size into account. ]]> 2020-09-24 06:27:49 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774799451 ABDULRAHMAN https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774800102 Pyramid of numbers

Definition: A pyramid of numbers is a graphical representation that shows the number of organisms at each trophic level. The reason for the pyramid shape is that there must always be enough plants to produce food at the bottom. Otherwise, the entire food chain would collapse.

 The bars are drawn to scale – the more organisms it represents, the wider the bar. The producer in the food chain always goes at the bottom of the pyramid of numbers.

Think about this food chain:
Clover → snail → thrush → hawk
Clover is a plant and it is the producer in this food chain. Its bar goes at the bottom of the pyramid:


]]> 2020-09-24 06:28:08 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774800102 Aya Ramadan (Food Webs) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774802669 Producers, also known as autotrophs, make their own food and do not depend on any other organism for nutrition by photosynthesis.]]> 2020-09-24 06:29:24 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774802669 Suhaila https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774809615 Pyramids of biomass measure the amount of energy converted into living tissue at the different trophic levels  Terrestrial ecosystems usually have much more biomass in plants, such as trees and grass, and less biomass as you move up in trophic level]]> 2020-09-24 06:32:53 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774809615 Aya Ramadan (Food Webs) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774809986 The next trophic levels are made up of animals that eat producers. These organisms are called consumers. These can be either carnivores or herbivores.

]]> 2020-09-24 06:33:04 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774809986 Alaa Maged (Food webs) https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774810437 Decomposers break down dead plants and animals. They also break down the waste of other organisms. They are an important element in the food chain because they keep up a continuous flow of nutrients for the primary producers.]]> 2020-09-24 06:33:17 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774810437 https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774810898 2020-09-24 06:33:31 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774810898 ahmedemameh65 https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774815012 Pyramid of biomass
By: Ahmed Attallah 

Pyramid of biomass shows the biomass of organisms in each trophic level. Biomass is the mass of each organism per unit area in a habitat. Pyramid of biomass is easy to scale and cannot be inverted since it doesn't take into consideration the number of organisms in each trophic level. As you go up the pyramid, biomass of organisms decrease.]]> 2020-09-24 06:35:28 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774815012 https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774819456 2020-09-24 06:37:45 UTC https://padlet.com/sawsandeeb/6t2zfocmenag6jbl/wish/774819456