https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo Steps to creating Unit Padlet Essential Knowledge study guides: (1) Go to the APES CED: https://apcentral.collegeboard.org/pdf/ap-environmental-science-course-and-exam-description.pdf (2) Scroll down to the Unit and Topic (3) Copy an Essential Knowledge statement, and paste it as a Padlet post. (4) Read and modify the statement to clarify (if needed) & give the post a title that conveys the meaning. (5) Select an graph, infographic, diagram, or image that effectively represents the post. en-us 2020-09-16 14:16:44 UTC 2025-02-21 20:40:32 UTC hello@padlet.com https://padlet.net/icons/png/1f30e.png hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687679 Positive and negative feedback loops can each play a role in food webs. When one species is
removed from or added to a specific food web, the rest of the food web can be affected.]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687679 hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687682 A food web is a model of an interlocking pattern of food chains that depicts the flow of energy and nutrients in two or more food chains.]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687682 hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687706 All ecosystems depend on a continuous inflow
of high-quality energy in order to maintain their
structure and function of transferring matter
between the environment and organisms via
biogeochemical cycles.]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687706 hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687711 Biogeochemical cycles are essential for life and each cycle demonstrates the conservation of matter. ]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687711 hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687717 In terrestrial and near-surface marine communities, energy flows from the sun to producers in the lowest trophic levels and then upward to higher trophic levels.]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687717 hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687724 The 10% rule explains how in the transfer of energy from one trophic level to the next, only about 10% of the energy is passed on.]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687724 hayley_salazar https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687732 The loss of energy that occurs when energy moves from lower to higher trophic levels can be explained through the laws of thermodynamics.

]]> 2020-09-16 14:16:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/751687732 eople https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/752255107 The phosphorus cycle is the movement of atoms and molecules containing the element phosphorus between sources and sinks (reservoirs).]]> 2020-09-16 16:20:12 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/752255107 adelapena21 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/752826065 The worldwide distribution of biomes is dynamic; the distribution has changed in the past and may shift again as a result of global climate changes. ]]> 2020-09-16 18:28:40 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/752826065 achauhan4 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753179018 Competition can occur within or between species in an ecosystem where there are limited resources. Resource partitioning— using the resources in different ways, places, or at different times—can reduce the negative impact of competition on survival.

]]> 2020-09-16 20:24:40 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753179018 pphan3 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753184016 The major reservoirs of phosphorus in the phosphorus cycle are rock and sediments that contain phosphorus-bearing minerals

]]> 2020-09-16 20:26:45 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753184016 gcamberos https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753189061 In a predator-prey relationship, the predator is an organism that eats another organism.]]> 2020-09-16 20:28:58 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753189061 jsalvador41 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753190375  There is no atmospheric component in the phosphorus cycle, and the limitations this imposes on the return of phosphorus from the ocean to land make phosphorus naturally scarce in aquatic and many terrestrial ecosystems. In undisturbed ecosystems, phosphorus is the limiting factor in biological systems. ]]> 2020-09-16 20:29:30 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753190375 mmcevoy6 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753191014  Most of the reservoirs in which nitrogen compounds occur in the nitrogen cycle hold those compounds for relatively short periods of time, or, in more concise terms, are considered short-term reservoirs.

]]> 2020-09-16 20:29:47 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753191014 acobarrubia https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753193046  A biome contains characteristic communities of plants and animals that result from, and are adapted to, its climate ]]> 2020-09-16 20:30:42 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753193046 fjohnson216 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753193194  The carbon cycle is the movement of atoms and molecules containing the element carbon between sources and sinks. ]]> 2020-09-16 20:30:46 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753193194 amedrano71 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753193251 The chemical processes by which atmospheric nitrogen is converted (by either natural or an industrial means) to a form of nitrogen (like ammonia) that can be taken up by plants to form plant tissue. ]]> 2020-09-16 20:30:47 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753193251 jjuarez221 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753194465  Some of the reservoirs in which carbon compounds occur in the carbon cycle hold those compounds for long periods of time, while some hold them for relatively short periods of time. ]]> 2020-09-16 20:31:19 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753194465 jcolmenares2 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753195340  Major terrestrial biomes include taiga, temperate rainforests, temperate seasonal forests, tropical rainforests, shrubland, temperate grassland, savanna, desert, and tundra. 

]]> 2020-09-16 20:31:41 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753195340 kguevarra2 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753196539  Marine biomes include oceans, coral reefs, marshland, and estuaries. Algae in marine biomes supply a large portion of the Earth’s oxygen, and also take in carbon dioxide from the atmosphere ]]> 2020-09-16 20:32:16 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753196539 ccasas21 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753200564  Symbiosis is a close and long-term interaction between two species in an ecosystem. Types of symbiosis include mutualism, commensalism, and parasitism. 

]]> 2020-09-16 20:34:09 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753200564 esobeckimcmullen https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753200888  The hydrologic cycle, which is powered by the sun, is the movement of water in its various solid, liquid, and gaseous phases between sources and sinks. 


]]> 2020-09-16 20:34:19 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753200888 acruz112 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753201689  The global distribution of nonmineral terrestrial natural resources, such as water and trees for lumber, varies because of some combination of climate, geography, latitude and altitude, nutrient availability, and soil. 

]]> 2020-09-16 20:34:40 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753201689 kmasangya https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753203750 The nitrogen cycle is the movement of atoms and molecules containing the element nitrogen between sources and sinks.

]]> 2020-09-16 20:35:38 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753203750 mmcevoy6 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753204520  Productivity is measured in units of energy per unit area per unit time (e.g., kcal/m2/yr). ]]> 2020-09-16 20:35:59 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753204520 fjohnson216 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753204911  Most red light is absorbed in the upper 1 meter of water, and blue light only penetrates deeper than 100 meters in the clearest water. This affects photosynthesis in aquatic ecosystems, whose photosynthesizes have adapted mechanisms to address the lack of visible light ]]> 2020-09-16 20:36:11 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753204911 kmaniti https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753206102  Plant and animal decomposition have led to the storage of carbon over millions of years. The burning of fossil fuels quickly moves that stored carbon into atmospheric carbon, in the form of carbon dioxide. 

]]> 2020-09-16 20:36:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753206102 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753208108 2020-09-16 20:37:28 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753208108 pkollu https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753211118  Carbon cycles between photosynthesis and cellular respiration in living things. 

]]> 2020-09-16 20:38:51 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753211118 achauhan4 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753213488 2020-09-16 20:39:59 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753213488 amedrano71 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753214484 The largest reservoir of nitrogen on Earth is the dinitrogen gas (N2) in the atmosphere. N2 is also the major form of nitrogen in the ocean. It is important to note that this form of nitrogen cannot be taken up by plants, that is why nitrogen fixation is critical. ]]> 2020-09-16 20:40:28 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753214484 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753216701  The oceans are the primary reservoir of water at the Earth’s surface, with ice caps and groundwater acting as much smaller reservoirs 
(ashley vercher)]]> 2020-09-16 20:41:27 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753216701 izapata3 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753231642 Net primary productivity is the rate of energy storage by photosynthesizes in a given area, after subtracting the energy lost to respiration. 

]]> 2020-09-16 20:48:44 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753231642 mibarraelizalde https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753308144 The global distribution of non mineral marine natural resources, such as different types of fish, varies because of some combination of salinity, depth, turbidity, nutrient availability, and temperature.]]> 2020-09-16 21:31:31 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753308144 dvizcarra2 https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753615474 Gross primary productivity is the total rate of photosynthesis in a given area. 

]]> 2020-09-17 00:48:48 UTC https://padlet.com/hayley_salazar/d1r6wjar68yb3cyo/wish/753615474