https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a en-us 2020-05-21 21:40:22 UTC 2024-03-06 03:44:58 UTC hello@padlet.com estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587932151 2020-05-21 21:43:46 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587932151 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587933474 2020-05-21 21:44:56 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587933474 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587936642 2020-05-21 21:47:31 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587936642 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587937556 The main geological agents are water, ice, wind and human beings.]]> 2020-05-21 21:48:18 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587937556 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587961138 These processes occur in this order: weathering, erosion, transportation and sedimentation.
They include all the changes that alter or wear down the rocks and deposit materials resulting from erosion.]]> 2020-05-21 22:09:24 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587961138 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587980542 The Earth has many different varieties of relief. This is due to the many different agents that shape the relief.]]> 2020-05-21 22:27:03 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587980542 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587984994 Geological formations refer to natural formations in the bedrock and soil, usually created by slow geological processes.]]> 2020-05-21 22:31:16 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/587984994 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588028848 2020-05-21 23:12:30 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588028848 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588029929 Weathering is physical, if there is only rock fragmentation; chemical, if the minerals dissolve or transform into other rocks, such as clay; or biological, if carried out by living things.
Physical: is the disintegration of rocks in different smaller fragments but they preserves all the characteristics from the original material.
Chemical weathering: is caused by rain water reacting with the mineral grains in rocks to form new minerals and soluble salts.
Biological: Biological weathering specifically refers to the weathering as caused by organisms such as plants, animals, and bacteria.]]> 2020-05-21 23:13:43 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588029929 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588089694 2020-05-22 00:15:19 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588089694 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588091712 There are many different agents that shape the relief: rivers in equatorial and warm areas, ice in the poles, and wind in the deserts.
Areas close to each other, with a similar climate, can also have very different types of relief because they sit on different types of rocks.
Climate and lithology are two factors that determine relief]]> 2020-05-22 00:17:36 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588091712 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588097402 2020-05-22 00:23:22 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588097402 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588101879 2020-05-22 00:27:33 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588101879 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588102796 2020-05-22 00:28:37 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588102796 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588104472 2020-05-22 00:30:24 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588104472 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588106684 2020-05-22 00:32:40 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588106684 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588111751 2020-05-22 00:36:47 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588111751 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588112174 2020-05-22 00:37:12 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588112174 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588126859 2020-05-22 00:50:51 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588126859 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588133648 Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum.]]> 2020-05-22 00:57:51 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588133648 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588135810 Limestone is a compact rock, resistant to erosion and physical weathering. However, it is sensitive to chemical weathering, which finally dissolves it.]]> 2020-05-22 01:00:12 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/588135810 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589415923 2020-05-22 17:12:50 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589415923 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589482910 speleothems: stalactites, stalagmites, columns]]> 2020-05-22 17:51:05 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589482910 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589489592 2020-05-22 17:55:14 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589489592 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589491818  It is the structure or arrangement of the strata, not the type of rock that changes the relief.
 is formed by the alternation of resistant and soft rocks where differential erosion results in the horizontal, sloped or vertical arrangement of the rocks.]]> 2020-05-22 17:56:38 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589491818 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589499598 2020-05-22 18:01:27 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589499598 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589499951 2020-05-22 18:01:41 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589499951 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589518355 2020-05-22 18:13:05 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589518355 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589528924 2020-05-22 18:19:58 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/589528924 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599549245 2020-05-28 16:27:27 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599549245 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599552674 An ideal river has a longitudinal profile curve,  with a steep slope at the beginning  becoming gradually less steep and almost level at the river mouth.
ENERGY: In the higher course, the erosive action makes the riverbed deeper. In the middle and lower courses, the river erodes the riverbed laterally, 

]]> 2020-05-28 16:29:03 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599552674 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599620522 2020-05-28 16:59:54 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599620522 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599642827 2020-05-28 17:10:44 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599642827 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599645597 2020-05-28 17:11:57 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599645597 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599753675 2020-05-28 18:04:43 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599753675 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599762500 2020-05-28 18:09:14 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599762500 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599792446 2020-05-28 18:25:30 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599792446 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599829836 2020-05-28 18:44:03 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599829836 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599960845 2020-05-28 19:57:40 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599960845 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599971732 2020-05-28 20:04:08 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599971732 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599977441 Infiltration:grownd water comes from infiltration of water from rain, rivers or lakes into the ground. 
Porosity affects the amount of water a particular rock type can hold. The ability of water to pass through the pore spaces in the rock is described as the rock's permeability. Permeable layers of rock that store and transport water are called aquifers.]]> 2020-05-28 20:07:39 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599977441 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599988906 2020-05-28 20:14:31 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599988906 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599989369 2020-05-28 20:14:48 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599989369 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599992777 Groundwater makes up 22% of all the fresh water on Earth, one third of the world’s population depends on groundwater to provide drinking water and for crop irrigation.
Overexploitation and contamination are the main risks connected with the exploitation of aquifers.
Aquifer overexploitation happens if the volume of water discharged is higher than the amount naturally recharged.  Contaminated water can reach aquifers from different sources: agriculture and intensive livestock farming, industry, urban residues or salt water from marine intrusion.]]> 2020-05-28 20:17:02 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/599992777 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600186943 Surface runoff flow without a fixed course. its action is intense in zones where there is sporadic, but torrential, precipitation, and the soil is unprotected because there is no vegetation. This accelerated soil erosion causes desertification.]]> 2020-05-28 22:56:23 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600186943 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600199881 2020-05-28 23:10:08 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600199881 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600218738 2020-05-28 23:31:08 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600218738 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600235603 2020-05-28 23:49:50 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600235603 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600249371 2020-05-29 00:05:12 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600249371 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600259830 2020-05-29 00:17:06 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600259830 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600275371 2020-05-29 00:34:50 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600275371 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600290714 A geological basin is a large low-lying area. It is often below sea level, and theyGeological basins are one of the two most common places inland which collect sediment ]]> 2020-05-29 00:51:36 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600290714 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600305293 2020-05-29 01:07:55 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600305293 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600306843 2020-05-29 01:09:41 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600306843 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600734902 2020-05-29 08:37:12 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600734902 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600739151 The geological action of the sea is seen especially on the coast. Marine shaping is also called coastal shaping. The costal areas contantly changing and they are dynamic.
The main facts that affect the coastal areas and make them changing are: The movement of the sea (mainly waves) which erodes the rocks, another fact for this changing are the sediments that came from rivers, also the human action and changes in sea level.]]> 2020-05-29 08:39:31 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600739151 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600776401 High coasts are formed by hard rocks (some examples are Galician or Cantabrian coasts), in this type of coasts the erosion predominates. In contrast, on the Mediterranean coast and the Gulf of Cádiz are low coasts, so there are many sandy coasts, which is the result of sedimentation. ]]> 2020-05-29 09:03:18 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600776401 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600802735 2020-05-29 09:20:19 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600802735 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600808613 2020-05-29 09:23:51 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600808613 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600809902 2020-05-29 09:24:38 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600809902 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600877258 2020-05-29 10:10:15 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600877258 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600890480 2020-05-29 10:20:11 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600890480 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600907981 2020-05-29 10:34:39 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600907981 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600920142 2020-05-29 10:45:02 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600920142 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600931766 2020-05-29 10:54:47 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600931766 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600934828 2020-05-29 10:57:17 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600934828 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600937139 DEFINITION: They are large masses of ice that can take many forms. For billions of years, glaciers have carved the earth's surface and fed rivers and oceans with water.

TYPES: The biggest types of glacier are called continental ice sheets and ice caps. Glaciers that flow down a valley are called valley glaciers. Outlet glaciers are valley glaciers that flow out from an ice cap or an ice sheet.]]> 2020-05-29 10:59:06 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600937139 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600944340 2020-05-29 11:05:26 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600944340 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600959044 There are many remains from the last glacial period in the highest mountain ranges of the peninsula, formed by old glaciers that have now disappeared. The most common shapes are the cirques, U-shaped valleys and orns or peaks, arêtes and glacial lakes or tarns.]]> 2020-05-29 11:18:00 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600959044 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600986725 The shaping of the landscape by the wind occurs through aeolian processes. Winds act on all parts of the planet but two factors are needed for the action to be effective:Abundance of fine loose materials(for example sand, limestone or clay),  and an absence of vegetation and moisture that fixes materials to the ground.
This I have said is very common in deserts and costal areas.
Its erosive capacity is limited. However, when wind carries sand, the impact of the grains against rocky surfaces acts as an abrasive creating very strange rock formations ( an example is mushroom rock).]]> 2020-05-29 11:42:29 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/600986725 estnunezgarciavictormanuel https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/601008709 The most common forms of erosion are desert dunes.
They are formed where the wind meets an obstacle. The wind stops so it loses almost all his energy and it deposits part of its sediment load. Then, the is the dune the one who acts as an obstacle favouring sedimentation.
There are dunes of many different sizes and shapes]]> 2020-05-29 12:00:16 UTC https://padlet.com/estnunezgarciavictormanuel/xhmsrktnh3zavz9a/wish/601008709