https://padlet.com/hayley_salazar/5oaehm9i33izwmml 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 13:55:59 UTC 2025-03-30 13:48:57 UTC hello@padlet.com https://padlet.net/icons/png/1f30e.png hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590497 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 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590497 hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590512 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 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590512 hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590538 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 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590538 hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590576 Biogeochemical cycles are essential for life and each cycle demonstrates the conservation of matter. ]]> 2020-09-16 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590576 hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590606 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 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590606 hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590675 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 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590675 hayley_salazar https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590709 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 13:55:59 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/751590709 jaguiluz https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752711591 In a predator-prey relationship, the predator is an organism that eats another organism (the prey).]]> 2020-09-16 18:00:38 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752711591 smanriquez https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752716613 Most of the reservoirs in which nitrogen compounds occur in the nitrogen cycle hold those compounds for relatively short periods of time.]]> 2020-09-16 18:01:45 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752716613 sbecerra3 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752716997 Major terrestrial biomes include taiga, temperate rainforests, temperate seasonal forests, tropical rainforests, shrubland, temperate grassland, savanna, desert, and tundra. ]]> 2020-09-16 18:01:50 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752716997 kmedina82 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752717561  Nitrogen fixation is the process in which atmospheric nitrogen is converted into a form of nitrogen (primarily ammonia) that is available for uptake by plants and that can be synthesized into plant tissue. ]]> 2020-09-16 18:01:58 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752717561 rbazacarrillo2 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752717565  A biome contains characteristic communities of plants and animals that result from, and are adapted to, its climate. ]]> 2020-09-16 18:01:58 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752717565 abalitaan2 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752717976 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 18:02:05 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752717976 eestradaflores https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752719447 Freshwater biomes include streams, rivers, ponds, and lakes. These freshwater biomes are a vital resources for drinking water. ]]> 2020-09-16 18:02:24 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752719447 vhernandez291 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752719547 Major carbon reservoirs include the atmosphere, ocean, lithosphere and biosphere storage. The largest reservoir for carbon is the ocean.]]> 2020-09-16 18:02:25 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752719547 nmunoz71 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752719594 The atmosphere is the major reservoir of nitrogen. ]]> 2020-09-16 18:02:26 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752719594 ksalvador5 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721248  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 18:02:50 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721248 hdolinar1 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721708  The worldwide distribution of biomes is dynamic; the distribution has changed in the past and may again shift as a result of global climate changes. ]]> 2020-09-16 18:02:56 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721708 asantos221 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721723 Primary productivity is the rate at which solar energy (sunlight) is converted into organic compounds via photosynthesis over a unit of time. ]]> 2020-09-16 18:02:57 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721723 akim317 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721750 Carbon cycles between photosynthesis and cellular respiration in living things

]]> 2020-09-16 18:02:57 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752721750 jhashimi https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752722777  The carbon cycle is the movement of atoms and molecules containing the element carbon between sources and sinks. 

]]> 2020-09-16 18:03:11 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752722777 jwoodard21 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752722973 Productivity is measured in units of energy per unit area per unit time (e.g., kcal/m2/yr). 

]]> 2020-09-16 18:03:14 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752722973 dsampang https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752722977 The oceans are the primary reservoir of water at the Earth’s surface, with ice caps and groundwater acting as much smaller reservoirs.]]> 2020-09-16 18:03:14 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752722977 mloper2 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752723516 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 18:03:22 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752723516 mgarciacastellanos https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752723754  The global distribution of nonmineral 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 18:03:25 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752723754 hburington https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752725147  The global distribution of non-mineral 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 18:03:45 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752725147 esimon28 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752726543  Gross primary productivity is the total rate of photosynthesis in a given area. 

]]> 2020-09-16 18:04:05 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752726543 mparas2 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752734778 The phosphorus cycle is the movement of phosphorus between sources and sinks.  ]]> 2020-09-16 18:06:03 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752734778 lsoto58 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752740388  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 18:07:20 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752740388 fruizriedel https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752741024 Phosphorous is naturally scarce in our environment due to the lack of return in the phosphorous cycle. Phosphorous can be a limiting factor in biological systems. ]]> 2020-09-16 18:07:29 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752741024 jaguiluz https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752748817 2020-09-16 18:09:16 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752748817 brichards39 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752753009 The major reservoirs of phosphorus in the phosphorus cycle are rock and sediments that contain phosphorus-bearing minerals (ie. phosphophyllite, turquoise, and vivianite). ]]> 2020-09-16 18:10:14 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752753009 sbecerra3 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752757475 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 18:11:16 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752757475 sgarcia551 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752766617 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 18:13:30 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752766617 esimon28 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752775630 2020-09-16 18:15:47 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752775630 mloper2 https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752775748 The nitrogen cycle is the movement of atoms and molecules containing the element nitrogen between sources and sinks ]]> 2020-09-16 18:15:49 UTC https://padlet.com/hayley_salazar/5oaehm9i33izwmml/wish/752775748